Euphemisms

I've got the permission to post these euphemisms from one of my funny co-workers. Here it is:

Perhaps baseball is my favorite sport because of all the euphemisms. Being gay is "batting lefty" or "pitching underhand" and being bisexual is "switch-hitting." Being on top is "pitching" and being on bottom is "catching." It makes it really easy to concoct ideas about the players.

This girl is brilliant, isn't she?