Top Definition
When you drain the top tank of the toilet, and proceed to lay a steaming triple-coil in it. Mainly done by rich white kids.
Dont use the washroom. i was just top tankin
by Norge March 25, 2004
Taking a shit in the top tank of a toilet so that chunks of fresh shit fills the bowl with each flush.
Same as defined above.
by Random_DooD August 05, 2004
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