1. When the outline of a man's penis is visible through his clothing.
2. When the head of circumcised man's penis is visible through his clothing.
1. hey becky look at your boyfriends penis line I bet he's got a big one
2. for swim team I had to wear a speedo and I was afraid my penis line would show.
by thatsright December 26, 2004
Those lines of muscles that are found only on men and in place of hips on women. Especially common on thin and lanky kids and when followed lead to nothing other than the penis.
"I can't help wanting to touch him when I see those sexy penis lines."
by Jacko September 09, 2003

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