look up any word, like fellated:
 
1.
A movie, play, concert, dance, etc. too ghastly for words.
Even John Updike couldn't describe the poorformance that My Chemical Romance put on last night!
by JohnnyLurg May 10, 2010
 
2.
When someone doesn't live up to party expectations... or totally overdoes the partying rendering them useless and annoying
"I can't believe I was in bed by 11.30 on a Saturday night. What a poorformance"
by AVL June 09, 2013