Third leg

A penis so big that it is as long as an average human leg.

Dude 1: Bro, he's got another leg
Dude 2: I can see his third leg.

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a third leg

"A third Leg" is often a term used to describe a man's large sized Penis.

"Ohh wow I heard he is so large, people say he has a third Leg".

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Third Leg

When the vagina hangs loose to the point that it seems that the person has an extra leg.

Chris:"Did you watch the view yesterday?"
Dave:"Yea!"
Chris:"Did you notice anything strange about Barbara Walters?"
Dave:"Yea her third leg was almost hitting the floor & it made me horny."
Chris:"Dave you ignorant slut!"

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Your third leg

Did you know your penis is an undeveloped third leg, crazy ik... but hear me out.

Joe: Yo, my penis is hard!
Sam: Dumbass, Thats your third leg!!!

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Third Leg Salute

In military terms, a male erection. Usually used by veterans and serving members of the military to explain the tent in their camo pants.

I gave that lap dancer a third leg salute.

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third-leg boogie

The act of having sex.

"I was in Chicago with Robert once. We were in his hotel room and these girls came and banged on the door, all ready for the third-leg boogie, and we're sitting there playing Monopoly."

- B.P. Fallon, former Led Zeppelin publicist, in the December 1994 issue of "Vox".

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Third leg beard

The patch of hair between a man's legs.

After I fucked the bitch, A hair from my third leg beard made her choke when it got stuck in her throat, so I pulled it out with my cock.

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