When a girl is on her period and has her tampon in.
"i wanted to have sex with her but she had a penis blocker in"

"ah that sucks man
by Jocelynclark October 4, 2008
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This high tech device revolutionized the privacy in Men's bathrooms. This device is usually a plastic or metal wall located between urinals to prevent another male from seeing a fellow comrade's penis.
Bob: Dude the guy in the bathroom was totally eying my sausage!!

Jim: Well next time use a urinal with a Penis-Looker Blocker
by Dr. Punaranktash May 24, 2011
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