Eat a thong
When you literally use your tongue to touch every part of a woman's thong. Might lead to trouble in the hallway or a new nickname.
He said, 'Eat a thong,' and then tried to lick her thong in the middle of the lunchroom.
She challenged him to 'Eat a thong' during gym class, and it ended with a detention.
He told her to 'Eat a thong' and then ran away when she chased him.