An A-Bomb is when you shimmy up the sides a toilet stall, roughly 4-5 feet, and drop a shit plummetting into the toilet below. Make sure to watch out for the Mushroom Cloud of water afterwards, however.
by JoshSteele December 9, 2008

by katbarbiebee September 30, 2010

by Karissa February 22, 2004

by ClamIAm December 14, 2003

Terds, which hang before falling down to the shallow toilet water beneath. This creates a hollow splashing noise and sends the foul water upward to give your rear a cold splash of your piss filled water.
by !THOR! June 16, 2006

by 1337 November 6, 2003
