Smellybutton
A particularly foul belly button odor typical of overweight and under showered people. It's a form of fromunda cheese.
"I stuck my finger in her smellybutton on accident and couldn't pick my nose for a month.
smellybutton
A bellybutton that smells. What the hell else would it mean?
Stuck my finger in my bellybutton this morning. That shit stinks. I've got a smellybutton, son.