1) A quab is a term used to describe the situation where you walk into your room and find you uncle and an octopus under your sheets.
2) Quab is the term used when no other swear could even grasp the complexity of the situation or event.
YOu could be a quab, be a qaubber, be qaubbing, or just doing the act of qaub.
Uncle: Oh hello billy, why dont you go out and play some baseball, huh sport?
Nephew: bu but but but....
Uncle: *Pushes out of room* Now run along now.
Boy: Wow Sally is such a Quabber for quabbing that guy
Boy 2: I know right.
boy: Hey sally your a Quab!
2) something you say when your in an awkward conversation
3) something you say to distract someone when running away
Person 1: I lost your car keys
Person 2: YOU QUAB.
Person 1: Hey sexy lady
Person 2: *panic* QUAB
Person 1: Give me your money!!!
Person 2: QUAB *runs away*