Top definition
The act of making hot monkey sex when you can't find anything else to do.
Yonky jas, be back in a couple hours.

This snow puts me in the mood for a little yonky jas.
by Luke Short January 29, 2005
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2
The act of making hot monkey-buttsex.
Yeah, i'm going to yonky jas my horse tonight.
by MCL February 01, 2005
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