The Not-In-Laws

Chris' parents are coming into town tomorrow. I love his parents, but right now we have only one shower working in the house, and it's in the guest bedroom. *sigh*

Also this weekend a co-worker is having a birthday party at his house, and I kind of wanted to go. Sean is one of the confirmed gays in the office and I find him cool, and maybe a little sexy (he looks a little like a shaven biggaloot). That being said, I had to tell Sean that it's doubtful we'd be able to come to his birthday party this weekend because the "not-in-laws" were in town. Now I'm sure he knew what I meant by the little joke, but I wasn't to sure that was the best name for my partner's parents.

Again, I really like Chris' parents, so I'm not trying to dis them, but where marriage isn't legal, in-laws isn't exactly the right term. What do you guys call your partner's parents?