Top Definition
When I person tries to appear more buff than they are by flexing harder than they should.
Person1: did you see Steve trying to impress those girls?
Person2: yeah you could tell he was Strain Flexing.
by Buntastic July 02, 2010

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.