When one person puts his penis up against a woman's asshole, but not in it, and then ejaculates--causing the cum to coat the butthole and slide down the rest of the crack.
Oh man, the other day I gave Sheila a total gummy bummy. She had to take a shower after that!
7👍 3👎
Did you see that picture of Lindsay Lohan falling over? You can totally see her scoogee!