https://en.m.wikipedia.org/wiki/ACID
Atomicity (something happens in its entirety or not at all), consistency (database is always in a valid state — if the database has constraints, they will always be honored), isolation (transactions don’t step on each other), durability (complete transaction is complete even if there’s a power failure).
Not a database expert, my parenthetical explanations may need work.
The think the objection is that this is specifically targeted at women, and it’s something that someone might be self conscious about.
“Free coffee to shortest/tallest/skinniest/fattest man” would be also be offensive IMHO, because it’s singling out people for a trait for which they maybe don’t want to be singled out.
Crude humor is great, if all parties are in on the joke; I believe the point that parent was making was that all parties are not necessarily in on the joke.