Spare change solely swinging in your pocket, occationally bumping into or caressing your penis head. Normally a nickel due to its relative size and weight.
OR
A phrase used to describe the feeling of having no intention on giving someone money.
"Hey, i got this booger."
"And..?"
"Well how much do you think it's worth?"
"Psh...i'll give you a dick-nickel for it."
"Sold!"
you know when you reach down a guys pants and the worstthing that could possibly happen happens??? Nickledick
So i met this guy the other day... Soooooo hot. He asked me to edit his lit paper so I went up to his room, his roomie was gone so we got a little cozy, reached down his pants and... NICKLEDICK. Worst case of Nickledick I have ever experienced. Needless to say I wont be seeing him anymore.