A prank performed by doing a naked handstand infront of a door using one of your feet to knock on the door, letting the person who opens it gaze at your meat in all its dangeling glory.
Jared was punched in the balls while giving Humberto a mandelier.
by SkinnyDragoon February 28, 2011
mandelier - the dangling part of the male genitals, i.e., testicles
Rich said to Keith, "I ain't no meatgazer, but I couldn't help but see Brian has a huge mandelier, boy, they hang down to his freakin' knees!"
by TooSick4U April 05, 2008