The good samaritan.

I'm taking public transit to work, and decide to send Kara a random, naughty textmessage.

Me: Wanna fuck? ;)

Kara: Uh... Do you think that's wise while riding the streetcar? ;)

Me: At least it'll help justify the fare increase!

Kara: Ha ha! So good of you to provide sex shows for a good cause ... How can a girl say no? ;)

Me: Ain't I civic minded? What a samaritan. Now get over here and hold this pole while I pull your pants down...

Kara: Oooh ... Yes, sir!

Me: ... mmm. Yeah, that's nice... Fuck, you have an awesome ass, baby. ... Oh, wait!..could you get us some transfers?

Kara: Oh, certainly, as long as you are pumping me from behind ...

Me: You love being taken from behind, don't you, waif?

Kara: Yes I do ... And I think the riders will enjoy the view too ... ;)