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1.
1:A performance in which a man puts his scrotum upon one's face then begins to hump quickly with force while yelling the words "Vasco da Gama."

2:Sexual abuse technique group(includes the infamous Hernando Cortez). Name originates from first use of the orignal technique, which was the first complete thought which came to the administer's head.1
Nathan was laying quietly on the couch when suddenly his peace was interruped by Matt's Vasco da Gama which left him scarred mentally.
by Warren April 12, 2004
 
2.
Club de Regatas Vasco da Gama, usually known as Vasco da Gama or simply Vasco, (after the famous Portuguese explorer of the same name) is a Brazilian sports club from Rio de Janeiro in Brazil, founded on August 21, 1898 (although the football department started on November 5, 1915). It was founded by Portuguese immigrants, and it is still the team traditionally supported by the Portuguese community of Rio de Janeiro.

O Vasco é o time da virada... o vasco é o time do amor
Juninho Pernambucano played at Vasco da Gama from 1995 to 2001
by O Almirante May 04, 2007
 
3.
The smashing and grinding of one's crotch on the face of another. Different variations may be added, such as a leap through the air, being thrown by a person on to another, or simply stripping off your clothes before administering the Vasco Da Gama
Matt gave the first and best Vasco Da Gama to Nathan in San Antonio. It lasted for more than 3 minutes.