The annoying lint balls that form in socks after they have been washed.
Dude, I've been walking around all day with a sock booger and it is driving me insane.
by Billy Fricken Badass November 13, 2007
A small collection of tiny threads and cotton pieces from socks in the form of a black, grey or even white boogers,mostly found between toes.
Josh had a dozen new SockBoogers between his toes last night.
by MmMmsockboogers November 23, 2005