What you talking about?

[Radiosactive]

A midwife is walking past the hospital staffroom, when she hears two African doctors talking, "I'm telling you it's wumba: W-U-M-B-A," says the first.

"No. It's woombaa: W-O-O-M-B-A-A," says the second.

"No, no, no. Wumba: W-U-M-B-A," says the first again.

At this the nurse pops her head through the door, "I think you'll find, gentlemen, it's WOMB: W-O-M-B,"

The two doctors look blankly at her, until one of them says, "Madam. I doubt if you've ever even SEEN a water buffalo, let alone heard one fart in a mudpool,".