Fic: What a swell party this is, DCU, non-gen, Clark Kent/Bruce Wayne

Title: What a swell party this is
Fandom: DCU, Superman/Batman
Notes: Title from here, inspiration from petronelle, who wanted Brucie/Clark. Well, she says it was for others, but... So Bruce Wayne and Clark Kent. Nothing explicit and utterly frivolous, but arguably identity porn.
You meet such a range of people at a Gotham party.

(  Bruce secretly (publicly) admits to loving and loathing these functions at random. )