Rep. Steve Cohen Mocks A.G. Barr with Bucket of Chicken, Joke Backfires

[[tmz:video id="0_jk7kdwqe"]] Congressman Steve Cohen came to work with props -- using a bucket of chicken to poke fun at Attorney General William Barr for ducking out on a 2nd day of testimony ... but Cohen kinda got burned by his own stunt. The…