junk armor 

anything that protects the genital area, particularly for use against unwanted contact.

"Dude, when I had that threesome, that guy's junk was touching mine. Eww, I should have worn my junk armor."

junk armor by The Orchid Queen January 19, 2008

junk armor 

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An athletic supporter, such as a jockstrap or a plastic cup, that protects the male genitals ("junk") against impact or injury.

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"That football hit me right in the crotch! If not for my junk armor I'd be singing soprano now."

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junk armor by al-in-chgo March 8, 2010