Madbun behaviour!

Okay how about this for strange. If i lie on the floor in the corridor and ignore Ash completely he starts doing binkys over my head and jumping on my back, running around like a madbun and licking my arms! But as soon as you pay him attention hes like what on earth? why are you touching me? My brothers cat in bristol does the similar thing shell stretch all over the middle of the living room floor and cringe when you go and stroke her! lol Any one else have a mad pets like this!