From a very very young colleague (I work in a very conservative profession)…
I run through what I can mention:
1) Possible/hopeful threesome tonight? Nope, probably shouldn’t mention
2) Tattoo tomorrow? Eh. Still probably shouldn’t mention
3) Date on Sunday with guy who wants to hear about tonight’s threesome? Probably can’t even mention as just a “date” as…not really your normal date.
Leave it at “oh, just some plans with friends. Nothing really.”