a british person who decides to go out & ends up sitting in the corner refusing to have a good time. usually very "sensitive" (read: crazy). tends to be very bad at playing telephone by not being sexually suggestive enough when allowed to create the sentence.
he was a real pissy pants last nite at the pub- lets never hang out with him again.
by merrin November 09, 2005
Usually referred to a person who hates everything. Is never happy with anyone or anything. Very critical of what others are doing. Constantly complains. Even pissy when everyone around them is having a good time and laughing. aka Debbie Downer
Do we have to invite her again? She is such a pissy pants.
by seriouslyonlyme April 12, 2009
the act of being a pissy little arrogant know it all fuck. being an all around douchebag, having a bad temperment and being unpleasant in general for no reason other than being pissed that you suck at life
"I had an awful table that was so pissypants. I knew I wouldnt get a tip as soon as they sat down."
by MISSMAYHEM13 August 24, 2009