1. The underside of the tip of a penis. sometimes concealed by skin if the owner of the helmet is uncircumcised.
Man that slut was licking all over my darth vader helmet.
by jordanc57 August 14, 2007
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Slang for the head of your penis. If you remove Darth Vader's helmet, then you are masturbating. If you find a place to put Darth Vader's helmet then you are having sex regularly.
- So what did you get up to last night then Steve?
- I removed Darth's Helmet
- Oh. So you were on your own then.
by Andy June 23, 2004
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