Brownish taxi
When you take a girl to the bar and you both get too intoxicated to drive, so you call for a taxi and then have anal sex inside the cab on the ride back to your place.
Person 1: "Did you hear about Harold and Amy's brownish taxi last night?!"
Person 2: "Yeah man next time someone has to ride bitch seat they aren't going to be happy about the shit streak."
Person 2: "Yeah man next time someone has to ride bitch seat they aren't going to be happy about the shit streak."