Top Definition
A person who is extremely intelligent but has difficulty functioning in the real world. Referring to Mensa the organization of people scoring in the top 2% on IQ tests.
He is so mensaly retarded, he can discuss physics but he can't operate a can opener.
by AJ Dob November 24, 2004
Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.