Top Definition
To confuse people out of the "Mainstream" and to use in any way possible. there is no exact definition, just use it anywhere you can!
wow damn look at those Zoncos!

i kinda want a Zoncos right now.

by William x Shakespeare October 04, 2011
A female who jerks you off so hard that your foreskin is pulled off.
Yo, don't date Trish. I hear she's a total zonco.
by MasterJesusKillerMan October 04, 2011
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