An American comedy movie.
Main character is a famous person like a celebrity.
For some reason in the movie, he needs a place to stay for one night. He comes across a married couple (he never met before) and asks them if he can take shelter at their home. The husband recognises him and is actually a big fan his, so he lets him stay.
Some time later, the husband leaves the house to grab something. And when he comes back, he catches his wife seducing the celebrity. Eventually they have sex. Surprisingly, the husband is excited and overwhelmed that his idol is having sex with his wife. So he happily watches his wife cheat with the celebrity.
Overall it’s a very funny and comedic scene.