Definitions by cmsjds

rfb 

n. - Acronym, standing for RANDOM FUCKING BONER. Used in reference to the erection one gets at the most impromtu of times, such as while sitting in a lecture about the holocaust, or while watching your sister's birth video. It never makes sense, but it happens nevertheless.

Dude, I was sitting in church during the Easter mass, and right when I went for communion, I had the world's hardest RFB! And I was wearing DRESS PANTS! ...I think Father Frank was getting an idea....

rfb by cmsjds May 9, 2006