Jimmy Kimmel starts Matt Damon Oscar pranks early with vandalism

Matt Damon better watch his back again at the Oscars this year! Jimmy Kimmel, who is hosting Hollywood's biggest night on Sunday, is already up to his old antics of pranking the "Bourne" star.

On Saturday, Kimmel posted a photo from inside the Dolby Theater where he is using a sharpie to draw all over Damon's seating card. In the funny snap, the late-night host has give Damon a black mouth, devil horns, a mustache and more.

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Best Picture Vominee Matt Damon #Oscars

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The duo have had a longstanding playful feud, with Damon even making an appearance at last year's Oscar Awards while Kimmel was hosting in order to tease him. It looks like this year is no different, and we can only expect more funny shenanigans between them.

Until then, check out last year's antics!

PHOTOS: See the stars getting ready for the Oscars

Stars prep for the Oscars on Instagram
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Stars prep for the Oscars on Instagram
Sunday morning....face masks and pancakes 💕 @kiehls
#oscarsglamsquad aka my magicians @karayoshimotobua @hairbyadir
Sweating for the red carpet starts early because the need for after party pizza is REAL. #Oscars
Oscars prep! 💯twinning with @mubinarattonsey @patidubroff @lacyredway here we go
Red carpet... #Oscars
I'm not sure if I could think of a better way to spend my birthday than with my boys whilst getting ready for my very first Oscars!!!! #pinchmeimdreaming
I'm so reckless when I rock my Givenchy dress -🐝#thenightbefore
But first....food! 😜#eredcarpet #oscars #seeyousoon
What to wear? #oscars
Who's ready for some #oscarsredcarpet? Let the fun begin! We'll have it all on @todayshow and @accesshollywood tomorrow!
And so it begins #OscarPreps! Will have it all for @accesshollywood and @todayshow!
It's almost that time ... #oscarpreps
Rubies are red... and I'm wearing tons of them! Heading to the #Oscars red carpet in my @officialfaberge x @Gemfields sparklers #mozambicanrubies
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In the process- getting ready for the Elton John Oscar party tonight!! Make-up & hair by @blay.locks . New hair color by @debidumas
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Last looks 🦄 #eredcarpet
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Pre #Oscars workout and sweatin' in my lucky Rock shirt. In my world on #Oscars night, there are no losers. #BurgersOrBabies #EveryoneWins 😉💪🏾
Getting my glow on thanks to @jgczech ❤️🙌🏻
Here we go! #Oscars2017 Thank you @allowitzstyles @hairbytraci @eviebellsmom @meiratjewelry @jovanifashions @bethmillercollection
Getting Oscars ready right now with @sirjohnofficial and @justinemarjan!!! I want to thank @stellaartois and @marchesafashion for making me feel like a princess and giving me the ability to spread the word about the global water crisis. Everyone should go to www.buyaladyadrink.com and buy a Chalice. Each one helps @water provide 5 years of clean water to someone in the developing world. Thank you all so much again 😘😘 #1Chalice5Years #OscarsSunday #sponsored
#ad @DunkinDonuts #today I'm almost #redcarpetready but first a bit of happy time in a quiet corner with my cup of joe!!!

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