Definitions by buns3

Whale tail 

The act of fucking a girl so hard, from any position, so long as the balls smack the female to the point that there is an unmistake, audible, and loud skin on skin popping sound resembling the sound of a breaching whale's tail smacking the water.

"Dude, I completely whale tailed that girl from the bar last night"

Whale tail by buns3 August 23, 2009