The final part of turd that will not fully depart and regardless of how much toilet paper you use, it continues to draw its mark.
I ran out of loo roll last night. Damned bum crayon!
by Stan Ton October 14, 2011
1 more definition
OMG i've been wiping for 20 mins and this bum crayon is not going anywhere!!
by crazy co-op lady September 24, 2009