1) Length of a very small penis.

2) Average penis size of a 12 year old boy.
I heard Suzie bought a vibrator because her boyfriend only has four inches down there.
by Damon June 17, 2004
a (typically high school) male who brags about their incredibly large appendage size, while actually only having a miniscule, or "four inch" penis.
"OMG! I was so shocked when I found out my bf was a four inch!"
by Pina_coladas&_rain April 04, 2006

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