If you ascend while polymorphed and your role is genocided, your god gives you some YAFM.

Alternatively (or additionally), the game is recorded as “ascended while on Charon’s boat”.

Custom-order shop: you pay up front for an item which is not there, and come back a certain (random maybe?) amount of turns later, when a mail daemon will deliver the item.

After a priest gives you two bits for an ale a certain number of times, they say “wow maybe I should not enable your alcohol addiction” and stop giving you more.

Fix flavor of steam vortex messages. “You’re being boiled alive!” and “Mmm, a sauna” if fire resistant. If you aren’t carrying a towel, “You wish you had brought your towel to the sauna”.