I think it's time that I tell my date to get us an uber.
Why do you want an uber? "
I'm going to have sex with him in the back seat
While you may really want to have sex with your date, using an uber for sex would probably upset the person driving you. Would you want someone having sex while you're driving?
You are no fun I was only making a joke
I understand that it was just a joke, but you could get kicked out of an uber for doing something like that. Most people wouldn't find this sort of joke funny and you'll be thought of as weird if you keep telling ones like this.