flex boner

When a dick is not hard but its not soft. It is basically a boner that you can flex.

Usually you get a flex boner when drunk.

Can also be referred to as a flex-b.

I was so tanked last night, I couldn't even have sex because all I had was a flex boner.

by Zach2k8 March 12, 2008

boner-flex

Sometimes spelled bonerflex. A boner-flex is when one is in a public place or something and he is horny and has a boner. However, not wanting to embarrass himself by masturbating, he flexing his penal muscles to acquire the intended pleasure.

The word boner-flex can also be used as a substitute for various swear words.

Dude, I was so horny in class so I just had a great boner-flex.

Dude, what the boner-flex?!

Son of a boner-flex!

by Smittalicious October 22, 2014