when you're smoking marijuana out of a pipe or piece and you suck in too hard and you get ash (or 'scoobs') in your mouth.

A term used to reference cannabis/marijuana/weed.

A noun, adjective, or verb that can mean almost anything in any context

noun: tactless guys that approach girls to hook-up.

When you are almost finished with a bowl of fine weed, if you ever get a nugget of ash, it's referred to as a scoob. Also known as a scooby or a scooby-snack.

A scoob can also be referred to as a lame or a goofy. A scoob is anyone who is at a certain level of immaturity or lameness and does not know how to get down and party with the big boys. A scoob can also be spotted drinking natural lite beer and wearing clothes purchased from tillys

Being as cool as or pertaining to scooby doo. Arguably the most radical things are totally scoob.