Argentinian slang, with similar meaning to that of Jock.
The few differences with this term fall to tinchos being rugby players with long hair, who often upload images and stories on social media in the effort of appearing to belong to a "high" Social class.
Term originated from the name "Martín" which got to be common amongst high school rugby players in Argentina.
(Tincho on an Instagram post, said Tincho and one of his rugby chums both posing for the camera, whilst both of them appear to be covered in mud. Description reads:)
-"A pic with one who doesn't play well"-
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."