I think everything about my boys is a bit strange, bless them!
At the moment, their favourite past time seems to be waiting for the postman, hissing at him and then destroying the post!
They also get annoyed if I'm late feeding them their tea and will help themselves - open the cupboard door, get a pouch out and chew/rip it open (normally on the carpet)! They know what is cat food in the cupboard as there are sachets of pasta sauce in there as well (all though they did eat some rat food once as well). I think it's clever - but also slightly annoying because it smells on the carpet and they are messy eaters!