If he goes into the bathroom (he flies to my bedroom and then to my ensuite which includes a 2nd toilet) he sits on the towel rail, stretches across and pulls the toilet roll off the holder. He then flies to the floor, positions the roll so that it is standing upright. He sits on the top of it and sticks his head so far down the hole until his body won't allow him to go any further. Then he makes noises, comes back up and nods, chuckles and then does it again. He chews on it too but not any where near as much as he sticks his head into it. It is so funny to watch.
If I don't get to him quick enough, unfortunately there are torn bits of toilet roll all over the floor. 
Anything he can, he will stick his head in to test out the acoustics!! The other night I was sitting in my recliner and he was sticking his head up my track suit pant leg
He's crazy.He also does it to cups/glasses - sleeves - and shoes. Crazy bird I have. but it's so funny to watch
