Latest sensation topic on Twitter. Believed by most world to be related to some kind of (inexistent) bird, and even to some new Lady Gaga's song. Its, in fact, the biggest inside joke of all time, by Brazil.

CALA BOCA means SHUT UP. Period.

GALVAO is referred to Galvão Bueno, a sports narrator from Brazil. Really annoying guy. CALA BOCA GALVAO!
Person 1: Hey man, each tweet containing CALA BOCA GALVAO donates some cents to a birds foundation, to save them. I'm doing it a LOT!

Person 2: Are you stupid? Brazil made the whole world look like fools.
by BRAZILZILZIL June 12, 2010
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