PIIYRB 

Put it in your roommate's butt

Tell your roommate's girlfriend who won't leave about the time you PIIYRB.
That should get her out.

PIIYRB by pleff September 30, 2004

piiyb  

"put it in your butt"
often used as a term of ownage or being pwned in some activity or just used sexually

" i just piiyb "
" i know i just got owned "

" you piiyb? "
" yeaaaah "

piiyb by exus345 June 29, 2008