What's a birthday celebration without a few warm wishes from your loved ones, your friends, your co-workers and your fellow Avengers co-stars? Today is the birthday of the Guardians of the Galaxy's very own Star-Lord, aka Chris Pratt, and the Avengers: Infinity War has received a very special message from Captain America himself, Chris Evans.On his Twitter account, Evans wished Pratt a happy birthday by sharing a picture of his dog relieving himself on a fire hydrant that appears to be cosplaying as Star-Lord. Clearly Evans' dogs can't be bothered by the "Dogs beware" sign. As the Captain America star says, "Happy birthday @prattprattpratt from me and this giver of zero f*cks"RELATED: Chris Pratt Teases Guardians 3 Could Be a Prequel, But James Gunn Says No

Chris Pratt has yet to answer his Avengers co-star. We assume because he's plotting a very specific (and equally hilarious) tweet in retaliation.

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In theaters now, Avengers: Infinity War is directed by Joe and Anthony Russo and stars Robert Downey Jr., Chris Evans, Chris Hemsworth, Mark Ruffalo, Scarlett Johansson, Paul Bettany, Anthony Mackie, Elizabeth Olsen, Tom Holland, Benedict Cumberbatch, Chadwick Boseman, Chris Pratt, Zoe Saldana, Dave Bautista, Bradley Cooper, Vin Diesel, Tom Hiddleston and Josh Brolin.