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1.
Any penis that is uncircumcised with a pointed tip, and resembles a yam
H: Hey C check out this site. (Craig's List: Personal ads)
C: Oh wow!
H: OMG Look at this guy's penis!
C: There is a penis on Craig's List?! It looks like a yam!
C and H in unison: YAM DICK!
A: Ew!
by C LA HALA December 12, 2008
 
2.
Someone who has a dick that is shaped like a yam
I don't think that actually is his dick but more like a yamdick.
by megabytemike December 29, 2011