Phenom doesn't know how to play?

Last night Lee and I were watching tv and both girls were on the cat tree. Phantom was laying in the tunnel and Phenom had claimed the top perch. Phenom was very spunky and was trying to play with Phantom who was having a nap. After about 10 minutes of trying to get Phantom wound up Phenom jump down and walked to Phantoms back side and bit her on the butt.

Why would she do that? Anyone else had this happen before?

Bagheera does this to Kitten all the time. And sometimes Annie Rose. He just runs up and bites them. Kitten will then start to play with him. Annie Rose beats him up.

That is so funny

Ducky is the biter of my bunch. But he waits until one of them is sleeping and then runs over, bites and takes off running. The rest of them are so used to it, they usually lift their head, then go back to sleep.