RRFB

Short for Rectangular Rapid Flashing Beacons, pedestrian-activated flashing devices designed to more easily get drivers attention providing a safer crossing.

My elderly neighbor is pretending he has to walk to the mall just to check out the new RRFBs installed at the crosswalk.

Filho da Puta

British Thoroughbred bay champion racehorse foaled in 1812 whose name, "son of a bitch" in Portuguese, was given by the owner of the Haras where it was born soon after he found out his wife was cheating him.

Hey, today I'm gonna bet on this horse with a weird name, "Filho da Puta".