I think we'd probably take the chance & go with them, acting like the whole experience was completely new to us (actually, it would be for us
). Maybe follow the other couples lead unless they were just there for a laugh. Then we'd excuse ourselves & leave. I have to agree w/ bear and babe, could be awkward if someone there knows you, especially after the 2nd or 3rd couple approached you. "Hey (your name here), we gonna get wild again tonight!" May be a
little bit hard to say they're colleagues from the office
. Still, if we liked the couple enough, I think we'd go & hope for the best.