Generally, a single or set of pictures containing an ass, tit, or vadge shot of a female. The lesser known "male n00dz" are less sought after, and hold less value when willing to trade.
"I can't believe you don't want sickm8's n00dz! What are you? Gay?!" or "Haha, you're such an Albanian franc, show us some of sickm8's n00dz!"