Colin Kaepernick posts definition of 'Stockholm Syndrome' after Michael Vick tells him to get a haircut

It has been four months since Colin Kaepernick became a free agent and he is still unsigned. While just about everybody has offered an opinion on the matter, one of the few people we haven't heard from is Kaepernick himself.

Kaepernick's silence may have changed just a tad on Tuesday when he posted the definition of "Stockholm Syndrome" on his Twitter account, a move that many felt was a response to — and possibly a shot at — Michael Vick.

On Monday, Vick was a guest on FS1's "Speak for Yourself," when he was asked about his own experience of trying to rehab his image and get back into the NFL after a stint in prison. Vick started by saying the first thing Kaepernick needs to do is "cut his hair" and "just try to be presentable."

While Kaepernick's Twitter timeline is typically filled with retweets, on Tuesday he issued just his second direct tweet since the Fourth of July.

The tweet certainly fits in with the social injustice themes often seen in Kaepernick's social media and could just be a bigger-picture message about not drinking the Kool-Aid from those in positions of power or authority. However, the timing is certainly curious, coming so soon after the controversial comments from Vick, suggesting Kap was comparing Vick to the Stockholm hostages.

Here are Vick's full comments:

"First thing we've got to get Colin to do is cut his hair," Vick said. "Listen, I'm not up here to try to be politically correct. Even if he puts cornrows in there. I don't think he should represent himself in that way in terms of just the hairstyle. Just go clean-cut. You know, why not? You're already dealing with a lot of controversy surrounding this issue. The most important thing that he needs to do is just try to be presentable."

You can see the video here:

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More: Kaepernick and other athletes protest during national anthem:

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Pro athletes protesting during the national anthem
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Pro athletes protesting during the national anthem
CLEVELAND, OH - AUGUST 21: A group of Cleveland Browns players kneel in a circle in protest during the national anthem prior to a preseason game against the New York Giants at FirstEnergy Stadium on August 21, 2017 in Cleveland, Ohio. (Photo by Joe Robbins/Getty Images)
Aug 21, 2017; Cleveland, OH, USA; Members of the Cleveland Browns kneel during the national anthem before a game against the New York Giants at FirstEnergy Stadium. Mandatory Credit: Ken Blaze-USA TODAY Sports
PHILADELPHIA, PA - AUGUST 17: Malcolm Jenkins #27 of the Philadelphia Eagles holds his fist in the air while Chris Long #56 of the Philadelphia Eagles puts his arm around him during the national anthem prior to the preseason game against the Buffalo Bills at Lincoln Financial Field on August 17, 2017 in Philadelphia, Pennsylvania. (Photo by Mitchell Leff/Getty Images)
SANTA CLARA, CA - SEPTEMBER 12: Colin Kaepernick #7 of the San Francisco 49ers kneels in protest during the national anthem prior to playing the Los Angeles Rams in their NFL game at Levi's Stadium on September 12, 2016 in Santa Clara, California. (Photo by Robert Reiners/Getty Images)
SANTA CLARA, CA - OCTOBER 02: (L-R) Rashard Robinson #33, Antoine Bethea #41, and Jaquiski Tartt #29 of the San Francisco 49ers raise their fists in protest during the national anthem prior to the game against the Dallas Cowboys at Levi's Stadium on October 2, 2016 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
CINCINNATI, OH - SEPTEMBER 25: Brandon Marshall #54 of the Denver Broncos takes a knee in protest during the National Anthem before the game against the Cincinnati Bengals at Paul Brown Stadium on September 25, 2016 in Cincinnati, Ohio.The Broncos defeated the Bengals 29-17. (Photo by John Grieshop/Getty Images)
FOXBORO, MA - SEPTEMBER 22: Duane Brown #76 of the Houston Texans raises his fist during the national anthem before the game against the New England Patriots at Gillette Stadium on September 22, 2016 in Foxboro, Massachusetts. (Photo by Adam Glanzman/Getty Images)
FOXBORO, MA - SEPTEMBER 18: Kenny Stills #10 of the Miami Dolphins (C) kneels during the national anthem before the game against the New England Patriots at Gillette Stadium on September 18, 2016 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
Philadelphia Eagles players Steven Means (51), Malcolm Jenkins (27) and Ron Brooks (33) raise their fists in the air during the national anthem for a game against the Chicago Bears on Monday, Sept. 19, 2016 at Soldier Field in Chicago, Ill. (Chris Sweda/Chicago Tribune/TNS via Getty Images)
Sep 8, 2016; Denver, CO, USA; Denver Broncos inside linebacker Brandon Marshall (54) kneels during the national anthem next to defensive end Jared Crick (93) and defensive tackle Billy Winn (97) and defensive tackle Adam Gotsis (99) before the game against the Carolina Panthers at Sports Authority Field at Mile High. Mandatory Credit: Ron Chenoy-USA TODAY Sports
SANTA CLARA, CA - SEPTEMBER 12: Kenny Britt #18 and Robert Quinn #94 of the Los Angeles Rams raise their fists in protest prior to playing the San Francisco 49ers in their NFL game at Levi's Stadium on September 12, 2016 in Santa Clara, California. (Photo by Ezra Shaw/Getty Images)
MIAMI GARDENS, FL - NOVEMBER 06: Miami Dolphins Safety Michael Thomas (31) and Miami Dolphins Wide Receiver Kenny Stills (10) kneel in protest during signing of the National Anthem during the NFL football game between the New York Jets and the Miami Dolphins on November 6, 2016, at the Hard Rock Stadium in Miami Gardens, FL. (Photo by Doug Murray/Icon Sportswire via Getty Images)
SANTA CLARA, CA - OCTOBER 06: (L-R) Eli Harold #58, Colin Kaepernick #7, and Eric Reid #35 of the San Francisco 49ers kneel in protest during the national anthem prior to their NFL game against the Arizona Cardinals at Levi's Stadium on October 6, 2016 in Santa Clara, California. (Photo by Thearon W. Henderson/Getty Images)
JACKSONVILLE, FL - SEPTEMBER 25: Hayes Pullard #52 of the Jacksonville aJaguars nd Dante Fowler #56 raise their fists in protest during the singing of the national anthem before the game against the Baltimore Ravens at EverBank Field on September 25, 2016 in Jacksonville, Florida. (Photo by Maddie Meyer/Getty Images)
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