1 definition by fartfartfarter

Top Definition
A dump when turds fly out hitting the water making a "twonk" sound.
I just took a massive twonker and now my butt is wet.
by fartfartfarter June 14, 2008

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug