Someone who's such an inconsequential and annoying prick that their capability to be truly obnoxious is reduced to a microscopic level, because no one bothers to pay any attention to their comments.
Bobby's always babbling about things that he can't even understand, that nanodick.
by Rusty1231 October 14, 2010
1 more definition
The penis length is on the nanoscale (one billionth of a meter)yet the scrotum and testicles are normally sized.
Bill can't have sex with any normal woman because he has a nanodick.
by MetalWarrior99 July 27, 2006