thick headed 

Often meaning the person is stubborn and stupid at the same time. They have an idea that is easily proved wrong but they refuse to let you.

My friend is so thick headed, he swears that all arabs are out to hurt someone.

thick headed by ciper August 12, 2005

thickheads 

People lacking in common sense or a modicum of intelligence, or people with big fat heads on their shoulders.

This country{USA] is full of thickheads because we elected Donnie Trump for President. A classic case of the dumbing down of America.

thickheads by Donald Cowboy Cerrone October 11, 2017

thickhead grin 

When you wakeup in the morning with an awful hangover (thickhead) but then you realize how much fun you had (grin).

Al woke up with a terrible headache after his 40th birthday party by then remembered how much fun he had. He was experiencing a thickhead grin.

thickhead grin by ARTIFAX January 26, 2009

thickhead

Numbskull, idiot, Bill Gates, bonehead, shmoe, Bill Gates, imbecile, Bill Gates, Bill Gates, Dubbya.

That Bill Gates character sure is one thickhead.

thickhead by Bastardized Bottomburp March 21, 2003