When Bobo was a little kitten (about 2-3 months old) he liked to play with the round brush – attachment for vacuum cleaner. His two brothers were afraid and they “disappeared” when I started to use the vacuum cleaner, but not Bobo.
When he was bigger, I tried to use the same type of a brush on his back. He was surprised and a little scared, but after 2-3 “sessions” he started to like being vacuumed.
Now it’s a ritual for him and he always enjoy it. It’s not a normal behaviour, so please don’t try this with your own cat!