I would take one to repair a rupture...haven't been offered one, though!

I guess...there was one session with marriage counselor where, when we sat down in his office, he said he had to leave in 20 minutes for a semi-emergency. He gave us the choice whether to stay or just leaving, saying if we stayed, he wouldn't charge us for 20 minutes. We opted to stay, as I was in kind of a bad place. He ended up being fairly helpful, despite the limited time. So, I guess we got a free almost-half-session.