Dudley Henriques writes:

Doesn't really get any simpler than "Go **** yourself" now does it?

True, but it doesn't really have any meaning, either. Since it communicates
nothing, there must be some other reason why you say it. You cannot be saying
it because of any effect on me, because it has no effect on me. Therefore it
must have some sort of effect on you, or on some third party.