Maybe sitcom with a whole episode took place in a shower?

It might be a TV series but in one particular episode a girl showered and some guy entered.
And at first they talked about something and then after a while I think two other guy entered too. The guys where clothed and the girl was naked in the whole episode.
There were some flashbacks during the episode. But over the episode showd these crowd multiple times.

I believe it must have been a sitcom. Maybe it was about a doctor or something.
I think I have seen it 6 - 10 years ago.

she was implied to be naked or shown naked? it was in english?