My husband and I regularly go to the cinema and, a couple of months ago, I sucked him off in a quiet screening of Geostorm.
For a while now I've been fantasising about doing it to a stranger. I keep wondering if there'll ever be a time when I go on my own and there's just me and a man on his own in the whole auditorium. If that ever happens, I'm going to have to go for it. In my fantasy, I see him with his wife and child in the lobby before the film, then she'd take the kid in to see whatever they're into while he gets to go into a grown-up film. I'd wait until the staff have just been in to check on us, then I'll go sit next to him and say in his ear, "I've been fantasising about sucking a stranger off in the cinema... would you mind terribly?" And he'll indicate that he doesn't mind at all.
I don't think I've ever given a blowjob to someone who didn't then immediately tell me that it the best they've ever had. It always feels great to be told that so I always try to make sure that I don't do a half hearted job, and this would be no exception. I'd have taken a coffee in with me so I can get my mouth nice and warm before I start, and allow the saliva to collect for a while so it's good and wet for him when I take it all in there. And I want to pull his foreskin all the way back and swirl my tongue around under the head so I can appreciate all the taste that's been building up throughout the day. My cunt will be so wet as I'll have been thinking about it for ages by now, and I'll reach down and get some wetness all over my fingers, then I'll reach up and put them in his mouth, making sure he can taste me while I'm tasting him. And when I feel him starting to cum, I'm going to tighten my lips around his shaft and make sure I don't lose a drop. Then I'll sit by him with my hand on his knee for most of the rest of the film, before excusing myself to "go to the bathroom" but never come back.