I'm also one of those people impropriety seems to seek out and dump on. I just can't help it.
Only a week ago, we were at a mate's house having a drink with him and his mrs. We'd not seen each other for a couple of months after our house move, and were making up for lost time (a couple of vodkas, takeaway, good chat etc). My fiancée, my mate and his mrs went outside for a smoke, but I was busy faffing around inside looking for my cigs.
I finally find them and get to the back door, to be met with the other three (my fiancée and my friends) mid conversation: "...so she's stood there with this big cucumber, and looked proper chuffed with herself!".
Drunkenly, I ask "Phwoar, who has a cucumber and what did she do with it? You can't shut up now I'm nursing a semi!".
*awkward silence*
"Erm, we were just talking about [insert name of their 2 year old daughter] discovering new foods at nursery mate"...
"E...er...u...erm...."
:\
They lol'd and took the mick, but I died a little inside and sobered up a fair bit quite quickly as you can imagine. D'oh!