adj. The pinnacle of the hierarchy of the fat scale. A phrase to describe a person so fat that they are unable to walk and must use a scooter at the store.
Dude: Man, how big is she like chubby?
Dude #2: No Dude, like rotund huge!
Dude #1: O no, she's scooter fat
Dude #2: Yea scooter fat
Dude #2: No Dude, like rotund huge!
Dude #1: O no, she's scooter fat
Dude #2: Yea scooter fat
by Acid Tongue Ireland June 19, 2010
Get the scooter fatmug.