A sexual act in which the female participant, wearing nothing but a whistle around her neck, gyrates her body such that the whistle swings in a circular motion during sexual intercourse.
That radio host from the town of August performed the whistle swinger using the whistle found on headmistress Umber's desk.
When a male has sweaty testicles and pelvis thrust forward and backward causing his sweaty testicles to make a “slapping” noise. Preferably done right out of the shower in only a towel.
Sam walked out of the shower in a towel with a crazed look in his eyes, and moved his hips back and forth rapidly creating a loud slapping noise. He was performing a powerful swingset.
(Watching porn) Oh yeah! Give it to her! Yeah let me see that tight ass! (Ejaculates) What the fuck am I watching? Don't treat her like that. She's somebody's daughter. Go get a real job you sleazy a-hole!