What episode is this?

I saw a scene from an episode years ago and am trying to figure out which episode it is.

Kirby was supposed to look after this Japanese guy and was told no alcohol or women.In the next scene the Japanese guy is having sex with a naked blonde woman while sitting on a chair.

The next morning the Japanese guy wakes up next to the blonde woman and his mother comes in and calls her an "American whore" in Japanese.

What episode is this?


I should have known those alien maggots booby trapped this sub