The underlying ability that a mans' penis has to point out one or several really hot women in a crowd of people, as if by radar.
by Latelate1234 January 2, 2010
- "Did you see the Dylan Sprouse nudes?"
- "Yeah man! I expected more. My penisdar was telling me atleast 6 inches but I was off!"
- "Yeah man! I expected more. My penisdar was telling me atleast 6 inches but I was off!"
by Key Meioh December 16, 2013