The end part of a mans penis which is so hardand sore it eventually looks like a mushroom.
Me -"CRIST! Look at that germans bell!"
My bro -"Mushroom helmet!"
*everyone watching german porn laughs*
by GirlSkater May 2, 2004
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the head of a dick as it is layed down the bridge of ones nost as the face protection of a war helmet be it norman,trojan,roman,or whatever helmet in wich involving the shaft of an errection on ones nose.
oooooh check out this ,
a passed out chick,
hey Ill giv her a roman helmet and when you take a picture make sure you get a good shot of the mushroom war helmet.
by skyjack_fixer@yahoo.com March 19, 2008
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