No worries, it’s just a case of mis-communication and differing expectations. Such is the source of most of the miserly in the world. Luckily, it’s also the source of most really really funny stories.
Everyone has their own different comfort zones and it’s very easy for people to walk back and forth across themwithout realizing it. Really, the responsibilities are twofold.
If you’re telling the joke, make an attempt to know your audience and gauge their comfort levels. If you’re hearing the joke the joke, keep in mind that the person who just stepped across your comfort level probably didn’t mean to and even more probably, has no idea that they did. If it’s just a one-time thing, ignore it or give them a subtle hint. If it happens more then once just tell them straight out, “hey, don’t take this the wrong way but and I know you didn’t mean it like that, but that sort of joke just isn’t my style. If it’s your thing fine but I’d appreciate if you’d tone it down a bit around me [or around person X].”
Finally, if your hearing a comment second-hand and the original audience wasn’t offended, just leave it alone. People can be expected to attempt to know their audience but it’s a bit much for them to anticipate their audience’s audience.
As illustrated by my earlier comment re “butt sex” I find great joy in wholly inappropriate comments tossed into absurd contexts and delivered in a straight-forward manner. Thus, “I would take you to my mother’s where we would stuff our nose-pockets with weasle burritos” also carries with it the same level of amusement. However, “butt sex” is shorter and simultaneously indulges my preference for random sexual commentary. As with anything, I have to tailor my comments to which members of my circle of friends, co-workers, and or strangers are present.
Now to give a personal example that somewhat parallels your own situation. Mostly to demonstrate that, even when you know all of this it’s still quite easy to slip up.
I once found myself in a spot very similiar to your friend’s. A good friend of mine would frequently stop by my place for beer, darts and off-color humor. Eventually, we were joined by his girlfriend [call them B and R] and settled into a regular habit of beer, darts, and off-color humor populated with a plethora of comments re boobs, male/female genitalia, and of course promises of sexual favors in as reward for particularly good shots or visa versa, blowing a game; none of which were ever intended to be taken at all seriously. Finally, the night would be capped off with drunken trivial pursuit. It was an odd group. Good times were had by all, no one was offended or threatened. At one point however, we were joined by a young lady that I was seeing at the time [call her T]. We [B, R and I] naturally fell into old habits, had a great time and assumed that everything was going just grand.
Unfortunately, after several weeks of this I found out that T had become very bothered by the comments I had directed at R, developed the idea that I was secretely attracted to R and of course was more then a little jealous. Naturally, fight ensues.
It all comes down to perception. I found the idea of anything between R and I fairly ludricrous [a lovely lady to be sure, but it’s one of those what?? but?? how could you think that??]. B knew that R felt likewise and wasn’t threatened. Similiarly, R knew that B wasn’t threatened and thus felt free to stretch her proverbial wings and enjoy a nice verbal sparring session.
However, T knew none of this. Nor could she have known, despite the fact that it had become obvious to the rest of us. Now, in the end it all woked out. R and I toned things down until T felt more secure and then eventually we resumed but this time with T joining in. Much Merry was had by all. Thankfully, Merry didn’t mind in the least.