The anus of a girl who is really not into anal penetration. If you even go near the switch, she calls a cab to take her home. Men, don't hit the cab switch on a first date! It can ruin what was an otherwise beautiful evening.
Did you hear? Dave and Chris picked up these foreign hotties from a bar out in Montauk, went back to their hotel for some sexcapades. After a little foreplaytercourse one of the hotties jumps up screaming, gets dressed, grabs her cellphone and calls a cab. Chris, that bastard, he must of hit the cab switch!