Anyone have any solutions for a 10 week old kitten that loves climbing vinyl shower curtains?

I caught him earlier and he pissed me off so bad because its like the 4th time today, so I turned the shower on him.

He didnt like it and got a bit wet. I'm sure this will happen again though.

The easy thing would be to close the b-room door but I cant cause the litter box is in the b-room.

Suggestions?