Label: Wet business

We saw this sticker on a car in Cape May, NJ, and I couldn't figure it out. Is it the car, the fish, or the man (or woman?) in the car this refers to? Apparently, FHB is a loose gang of people that rather fish than do anything else, including eating (the fish) and sleeping. I can imagine other FHB abbreviations - like For Hire: Brain, Fox Hunts Bad, Fear Her Breasts, etc. (sorry kids for the last one, but I think you can take it). Or how about Funny Holy Boat (the kind that sinks)? I like fishermen, so I hope you take no offense, I just thought the sticker was funny.