When your saggy balls swirl around like a helicopter. Many men over 40 slowly start to notice their balls drop. By the time a male is over 60 his balls have really dropped, by the time he is 80 his balls look like a droopy sock with marbles in it.
You are scrubbing a pot or pan at the kitchen sink and you realize your balls are spinning around at the same time like a helicopter. This is called "Helicopter Balls"
by S.S. Davis Rockland May 23, 2009
The sexual position in which a female human being lies on her back (on a bed, sofa, moose, tent, bubble wrap, trampoline, etc.) and a male human being jumps into the air, does a full 360, and slams his balls into her face.
As Ryans mom lies on her bed, Tyler leaps into the air and slams a Helicopter Ball Drop into her face. She screams with plessure!
by Quojax September 1, 2008