originally derived from the Spanish "cállate el osico" which roughly translates to "silence your snout". A very crass way to tell someone to shut up. Often only used among very close friends.

Popular along the Mexico-Texas border.
-"Ay what were you wearing last night, you looked busted girl"
-"Telosico, pendeja"
by El Joto del apartamento 512 February 26, 2019
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