main vain

Main vain refers to a penis. A mans main vain.

"dude, i gotta go drain the main vain" meaning he needs to urinate, piss.

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Main Vain

Also known as the penis. There is no muscle in the penis, the penis is erect by a massive rush of blood. Therefore another nickname for the penis is the Main Vain.

Don't use the brain, use the Main Vain!

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Drain the main vain

1. The act of releasing urine from your penis.

2. The act of releasing semen from your penis

I drained the main vain all over her.

Well, time to drain the main vain

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drain the main vain

as in you need to go urinate(av a piss).

B: aw ive drunk too much. coming to drain the main vain?
C: yer sure...

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railing the main vain

Snorting a white powdery substance off a fully torqued penis

did you hear about Leslie!? last weekend she was railing the main vain on a cruise ship and now shes married to a 65 year old millionaire.