Went over to my folks last night to do dressing up and giving out of sweeties to children. Wore my conference-attending suit, plus cat ears and collar with bell (left over from kitty rights protest). Small children had no problem being served sweets by Business Cat but parental household cats were very, very unimpressed.
Baby walked into the sitting room where I was reading my book, between trick-or-treaters, and stopped and stared with an appalled expression on her face, for a whole minute (no exaggeration). When I stood up she went MARP and ran out of the room at 30mph, as they do. I settled back down and realised a couple of minutes later that she was peering at me from behind the couch. Again, she ran away when I went towards her; two minutes later she was back peeping out again. Maybe it was the cat ears? Got the same treatment from Chippy and Sam later on - full-on WTFing - although they weren't quite as freaked out. (Tempted to experiment a bit more with the cat ears and the Island cats...)
Also carved a very cool pumpkin, if I do say so myself ;-)