muttonhead

don't be such a muttonhead about the situation.

only a muttonhead would forget their own birthday.

she called him a muttonhead for his silly mistake.

it takes a real muttonhead to ignore such advice.

stop acting like a muttonhead and listen carefully.

he's a muttonhead when it comes to technology.

don't be a muttonhead; think before you speak.

being a muttonhead won't get you far in life.

she felt like a muttonhead for not studying harder.

calling him a muttonhead was just a joke.