felx

When you get a boner and flex it.

Watch me felx, hoo ha!

by Trunks Oliver Wood December 2, 2003

felxing

An awesome new mutual-masturbation technique that hella good homies can do together, and not be considered gay at all.

After felxing with Joseph and Andrew the last few nights, I'm exhausted.

by BrianDilley January 31, 2008