la piscina mean the swimming pool
It means, "...in the swimming pool."
it means you've zoned out. or a made up place and stop watching demi lovato La La land also references Hollywood . . .
it means to "sing"
Basically ooh la la is an exclamation of surprised approval. The expression may have very strong sexual connotations, but not necessarily. It is used in America and other places to indicate approval...