Former President Obama's recent appearance sets Twitter ablaze

Seeing Barack Obama speak at the University of Chicago on Monday had the internet feeling a little emotional.

See also: Obama refuses to address Trump as he opens up in his first public event since leaving office

The former president has been out of office for just about 100 days -- and that's far too long for many Twitter users.

See what people are saying on social media:

Many were nostalgic about his jokes and his manner of speaking, especially since it took three full months for the former president to make his first public speech.

Ahead of the appearance, he spent Sunday meeting with at-risk young men and boys in his "adopted" hometown.

See what he's been up to in the past three months: