top decker

A party trick
The trickster takes a dump in the cistern of the host's toilet, resulting in rusty water for months unless the offending turd is fished out and flushed away.
I went to that bastards party the other day, drank his beer, fucked his girlfriend and left him a top decker for the morning.
by Squealpiggy September 19, 2005
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Where a male shits in the tank of a toilet, whilst receiving a blowjob. From a female shitting in the reverse kanga position
Yesterday I walked in on Jayden and Rachel having a top decker reverse kanga blumkin
by Nicegary February 14, 2017
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