What is Rusty Motorboat?
1.
When someone places their lips in the recently used/dirty butt crack of someone else, makes the "Brrrrr" sound of a motorboat, and shakes their head back and forth very quickly.
SEAN pooped himself a work and didn't have any toilet paper so KELLY gave him a Rusty Motorboat to clean him up.
See
Random Words:
1.
A tur that suddenly appears inyour underwear. Most commonly happens when u have dhiarea.
E.G
Dad: Good morning son *sniff* holy cow wh..