num-num

A person who is very simple in the brain and cannot figure out basic human concepts such as being able to pick a pen up without hitting your head on a table. They usually have literally no common sense and more commonly then not go by the names Olivia, Tilly and Lucy

Omg they literally just bashed their head against a wall and didn't notice! What a num-num!

grosty

A person who is grosty is both crusty and gross at the same time. A person who is grosty usually will have greasy hair, smell like body odour and have a geeky or weird personality. They usually will not bathe reguarly.

person 1: Omg that guy has the oiliest hair I've ever seen
person 2: That's so grosty!