1. Any two word expression with words beginning with F and B. For example: Fat Bastard, Fart Breather, Fiendish Buttsecks, etc.
2. The 1981-1985 Mazda (Savanna) RX-7, 1st Generation. Most people will confuse it for a Porsche, but it's a rotary powered banshee. Called an "FB" after its chassis code.
1. I spotted a couple FB's in the FB engaging in some serious FB.
2. What we thought was a weedwhacker turned out to be an FB outrunning some cops on the interstate.