The Gashouse Gorillas is a group of characters in Looney Tunes.
When Bugs Bunny was watching a pathetically mismatched baseball game between the Tee Totallers and the Gashouse Gorillas, he was so incensed by the Gorillas’ arrogance that he claimed he could defeat them all by himself. The Gorillas accepted his challenge, but Bugs still managed to win in a 96-95 victory which ended when Bugs caught a fly ball that had flown for several miles.
A bunch of cocksure brutes that thought no one could defeat them in a ball game, especially when they used their muscle to intimidate the umps to call so many plays falsely in their favor. When they found their winning streak threatened, they resorted to using huge trees as a bat.