Fat, lots of meat, chubby, chunky around the edges
Have you ever seen fat Amy, she is so thick
British slang for stupid (thick skull)
Brits: He seems nice but he’s very thick
Americans:😳
Big, huge, of certain dimensions.
"I've met him and I've seen that he has a thick penis".
Adjective to describe a girl with an attractively shaped body with curves and a nice ass