Chris Evans Wishes 'Captain America' Co-Star Sebastian Stan a Happy Birthday With Hilarious Pic

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Happy birthday to Sebastian Stan!

The actor, who plays Bucky Barnes opposite Chris Evans' Captain America, received quite the birthday shoutout from his onscreen frenemy.

WATCH: Jenny Slate Can't Stop Gushing Over 'Dream' Boyfriend Chris Evans as They Make Their Red Carpet Debut As a Couple

Evans took to Instagram on Saturday to wish his pal a happy 34th birthday, the best way he knows how.

"Happy birthday, Sebastian! I still remember that time I helped you with your college essay" he captioned a pic of Stan holding up his "college essay" with the words "all your wildest dreams will come true" as the title page.

Evans has been on top of his birthday game lately.

Just two days earlier, the Captain America star shared another hilarious birthday wish -- this time to Chris Hemsworth.

"Happy birthday to my buddy @chrishemsworth," Evans wrote, along with a silly blooper. "My favorite person to mess up an otherwise flawless take."

It seems throwing a little friendly shade runs in the Avengers family.

WATCH: Robert Downey Jr. Welcomes Tom Hiddleston to Instagram With a Little Friendly Shade

Robert Downey, Jr. took to Instagram earlier this week to welcome Tom Hiddleston to the social  media site with a witty dig at Hiddleston's now-infamous "I heart T.S." shirt.

"Join me in welcoming the biggest T. Stark fan of them all to Instagram! @twhiddleston," Downey, Jr. joked, along with a pic of the 35-year-old actor rocking the tank.

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See Hiddleston's response to the lighthearted dig in the video below.