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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
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Apr 22 Word of the Day
When you eat dirt for the first time and leave your family to build a shack in the woods
Bro since I got dirtpilled on Tuesday I have made sooo many worm friends and made them soo many little houses to get married in. Me? Lonely? No you’re the lonely one u lawn owning freak
via giphy
by ecogoth December 30, 2020
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