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1.
A very large penis, humongous if you will.
"Fuck you shoulda heard the chick screaming last night i think he has an Ian penis".
by Rex Banger December 17, 2007
 
2.
An abnormally tiny penis ranging from about 1 to 3.5 inches.
-That kid doesn't know what he's talking about.
-Well, I guess he's trying to make up for his Ian penis.
by 100010110 February 03, 2007