Yosemite Sam is the hot tempered Looney Tunes rival to Bugs Bunny, created by animator Friz Freleng and first appearing in the 1945 short Hare Trigger, originally voiced by Mel Blanc. Designed as a tougher, louder foe than Elmer Fudd, Sam became known for barked orders and explosive frustration. His quit stallin line sums up that persona in one order, which is why the clip circulates on soundboards and in cartoon edits as a ready made hurry up reaction for memes, streams and group chats.