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
Hero (2)	-	Ancient Greek (Latinized)
Lutfi	-	Arabic, Indonesian
Yoko	yo:-ko	Japanese
JÓHann	-	Icelandic
Cavan	-	English
Ainslee	['ænsli]