cop-a-like
When you see a car that resembles a police cruiser. Might be a Crown Vic, Mercury Grand Marquis, or something newer. It forces you to slow down and drive more carefully than you care to admit.
"Hey man, you're going too fast, there's a cop up ahead. Slow it down."
"Nah, that's just a grandma driving her Grand Marquis cop-a-like boat."
"Nah, that's just a grandma driving her Grand Marquis cop-a-like boat."