Post Eating Fatigue - the tired feeling experienced after consuming a large amount of food.
Can be used as a noun, verb or adjective
Noun
I have a serious case of the PEF
Verb
I am peffing out mate!!
Adjective
You are looking quite pefly
PEF stands for Post Exam Fever. The sickness that many people get after or before exams.
Teacher: Where is Harrison today?
Student: He's got a serious case of PEF
Chub or chubby. Male genitals
Damn, that dude's peffing is peeking out of his spandex shorts
A permabanned IGN user who is known to use many accounts to back himself up. He uses his alt accounts to talk to himself to make it appear as if people are agreeing with him, which everyone else knows he is being an attention whore. Pef is the biggest loser on the NASCAR board. He likes to call people mental midgets, but compared to his microscopic brain, everyone looks smarter than he is. ONLY a retard needs to back himself up.
If I got a WUL from all of Sir Pef's alternate accounts, i'd be a WULionaire!...There goes pef on another one of his accounts.