whachusay Share definition Flag combined of "what" "you" and "say" as in saying the phrase "what did you say?" guy: yo check it out i got an A+ on my paper! dude: whachusay? guy: I aced teh paper! dude: schweet! whachusay by the pwn3r October 13, 2006 0 0 Get merch Get the whachusay mug. Buy Now — $32.95 See more merch