Yeah, well your mom was really good last night Share definition Flag A comeback, usually signifying that the person saying this phrase can't win the argument. "Go fuck yourself, you piece of shit whore" "Yeah, well your mom was really good last night" Yeah, well your mom was really good last night by Assholes Inc. September 10, 2003 0 0 Get merch Get the Yeah, well your mom was really good last night mug. Buy Now — $32.95 See more merch