Top Definition
An endeering term to describe shady, scared and mischievous people. Spanish translation - Worm/Caterpillar.
He cheated on his fiance on the night of his bachelor party. What a little gusanito.

Skydiving is fun! Don't be a little gusanito.

The students left a tack right side up on the professors chair. Those little gusanitos.
by cowabunga7 March 02, 2011
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