be all brawn and no brain(s)

To have great power or physical strength but lack mental acuity or intelligence. He may have been a good football player in high school, but he was all brawn and no brains, so he didn't get into any colleges.

Common Names:

Name	Pronounced	Usage
Douglass	DUG-ləs	Scottish
Taufik	-	Indonesian
Onesimos	-	Ancient Greek, Biblical Greek
AlİYe	-	Turkish
Grover	GRO-vər	English
Jerrold	JER-əld	English