Top definition
When one wobbles one's belly to the tune of a dubstep track, be it an actual track or an impromptu acapella version.
"Let's play some tumstep!" *grabs belly* " Wob wob wob wob wob*
by MC Tumstep March 08, 2011
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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