not just a pretty face

Having distinguishing achievements, intelligence, skills, or abilities beyond what was or may have been assumed. Although the opposite of the phrase ("just a pretty face") always indicates physical attractiveness, this version primarily emphasizes a person's contributions, with the assertion of attractiveness often being intended as humorous. Sure, I know how to fix your computer. I'm not just a pretty face, you know! Bob: "I didn't know Jerry had a PhD in engineering." Dave: "I guess he's not just a pretty face."