Top Definition
Slang term for a man's penis. The "tunnel" refers to a woman's vagina. Generally used to refer to someone's penis in mixed company.
Guy: Dude, I was with this girl last night, and she wanted my pe-

{mom walks by}

Guy: tunnel surfer so bad.

Mom: Must be a new toy.
by xBrooksiex March 16, 2008
7 Words related to tunnel surfer

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