Top definition
Having sex with an obese women in the "doggy style" position.
Last night I got so drunk I went home with that fat girl and whale backed the shit out of her. It was like trying to paint the Vatican with a No. 2 pencil. That will be the last time I get so drunk that I go whale backing
by grinch Nathan October 02, 2013
Get the mug
Get a whale backing mug for your coworker Beatrix.