1 definition by Boo Bee
A girl gives a guy fellatio and he comes in her mouth. Before she swallows he shoots her in the head, causing the jizz to eject from her head similar to that of a sperm whale.
Dude #1 "Watching Free Willy reminds me of the time I sperm whaled that ho"
Dude #2 "Boy, you are one sick fuck"
Dude #2 "Boy, you are one sick fuck"
by Boo Bee December 08, 2008
Get a sperm whale mug for your mother-in-law Beatrix.
