Anyone ever spied on you in shower or bath or getting changed and got sexually turned on (and/or you did)?

And either watched while touching/masturbating, or actually made a move and joined you?

I've not had any of these things happen, so can't really comprehend what would occur if they did.

If they did happen to you, was it with someone you already knew (friend, lover, partner, fwb, neighbour, husband/wife, etc.) or someone you'd never met before? Was it with more than one other person?

Being single they won't happen for me so that's a definite dreamland-only scenario.