There's an inspector looking over a hospital. As he's looking around, from the ER, to the labs, to the psych ward, to even the cafeteria it's impeccable. Everything's clean, everyone's in proper uniform, and everyone seems to be well cared for. As he goes upstairs to the "special wards" he notices, in a room,three guys furiously jacking off. He pauses a moment, takes note of this, closes the door, and moves on. A few doors down he looks in and sees a nurse with a lone patient and the nurse is giving him head. At this point he goes straight to the (teehee) head nurse and demands to know why this is happening in those rooms.
"Well,", she says, "You see, all of these men are allergic to their semen and have to get rid of it every few hours or they get violently ill."
"Ok,", says the inspector, "So, why are those three lleft to jerk off in the same room over there and this one's getting, well, 'taken care of' by that nurse?"
"Oh, that's easy; the one with the nurse has health insurance."
** rimshot**
Edited: Thanks, banal; it'd been years since I heard it ...