Best definition
a person with downsyndrome.mainly because they dribble and spit all over their gobs so it becomes wet and or crispy.you

could also call someone a wetgob if they look like/act like they’ve got downsyndrome ( really ugly, speak like one, fat bottom lip etc)

Carlo: Adam looks like he’s got downsyndrome

Luke: Adam you look like a wetgob with all that round your mouth.

Adam: splish splash splish splush.