where's the bathroom, man?  i've got a butt spider crawlin' around on my ass, i've got to take a shit so bad
a butt spider is what a clenched anus looks like when one tries to keep from shitting his/her pants
"where's the bathroom, man?  i've got a butt spider crawlin' around on my ass, i've got to take a shit so bad" What is the definition of "butt spider"?