N. -When you are so crossfaded that no matter how much you jack off, get head or fuck, you can't bust a nut. It is like your dick is plastic. Hence, plasdick.
Matt: Yo, dude. Did you seal the deal with that chick last night?
Robbie: Sorta. I ended up just passing out. I was so fucked up I had a plasdick. My shit wouldn't work.