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1.
A person with Hispanic or Spaniard background who enjoy the occasional act of anal penetration. With penis inserted inside the partner's rectum and hip swaying back and fourth, one will mimic the act of surfing.

Not to be mistaken with "Silver Surfer".
Bryan Escudero: Yo brah, I did some great culo surfing last night!

Ralph Montoya: TUBULAR! you're such a culo surfer.
by Bruce Leeper February 03, 2011