Wank holiday weekend

So one of my work colleagues on Friday gave me a high five on the way out of the office and shouted pretty loudly “here’s to a great wank holiday weekend”.

I think this was totally unacceptable - well clearly is was. Lots of the office girls were looking at me as if I was involved in what was meant. Even some the guys were smirking at me. I mean I don’t even know what it means. A break from wanking? Wanking lots? Wanking someone else. It doesn’t really matter to be honest.

But if the colleague thinks they can talk to me this way will it happen again. I’ve already been told about various porn interests which I don’t really want to hear about but didn’t really care as at least it was spoken on a 121 basis. Not out load for the whole office to hear. Will this change?

I’m worried I’ve let this sort of conversation go on too long I can’t make it stop by just ignoring. I mean will there be a raised volume if I just totally ignore the story of the latest porn find and once again I’ll be guilty by association in the office.

Any tips on what to say to her so I don’t seem like a prude but make this stop?