BWAAAAAAAAAA! Share definition Flag The sound an unsuspecting male makes when being penetrated by another male's hardened genitalia sammy was busy minding his own business when chris crept up behind and inside him causing him to yell BWAAAAAAAAAA! BWAAAAAAAAAA! by sge400 October 19, 2008 0 0 Get merch Get the BWAAAAAAAAAA! mug. Buy Now — $32.95 See more merch