Hrmn.... well I
tend to call our girls:
Bootie: Bootie-boot, Wobbly-bobbly, Bootie-bob-bob, Squeaky-boots
Tosca: TosseKat (a play on the Danish for crazy cat), Chatty-Catty, slinky, rinky-dinkRune
on the other hand has a habit of ruining perfectly good names and calls them:
Bootie: Bootie-Lootie, Bootleootelootleootleootleootle..... (it goes on and on) Bootle-catla-rootle (however the hell it's spelled, sounds horrible anyway)
Tosca: Nosnie, Tosca-losca, Tossleoss, Slinky MacSlink
DOn't ask about the Mac names... I get called Hooty MacBoob or Grumpy MacGrump - so you learn to live with it
They also have shared nicknames depending on what they're up to
Monster-munch, ratbag, smelly cat, stupid creature, toad.....
They very rarely get their proper names. Not that they care.
We're both hopeless.