When, after climaxing in a woman's vagina, the man pulls his penis out, and procedes to drum on her belly with it; lasts up to a minute, whence past a minute, it becomes tummy-beating.
A drumline tradition during which new bass drummers must stand on their heads while inside their harnesses being held up by their drums. After this they are officially part of the marching band. (Filming is optional but highly recommended.)
Shannon: Hey Jack get over here!
Jack: *starts walking*
Shannon: PUT ON YOUR BASS DRUM! NOW!
Jack: *scared* ok... *puts on drum*
Shannon: *pushes Jack onto the ground head first and makes him do a bass drum roll*
*Pat walks over and starts filming*
Jack: Are you filming yet?
Pat: No not yet
*This continues for two minutes*
When a woman farts in the seated position and the gas exits through the front instead of the back, becoming trapped in the frontal region. She then heads to the bathroom to shit and upon first push, produces a quif... The Drum Roll.
Harriet realized it was time to go when she let a short pre-shit rip out while sitting on the couch. She headed to the bathroom and upon sitting down gave a little push, and out came The Drum Roll before the big event.