A man walks into Selfridges, and looks like a normal man in a big shop, a bit lost. One of those many assistants come up to him and asks if she can help.

"Urrm, yes, could you tell me where the women's department is please?"

"Certainly sir, it is on the first floor, the escalator is over there"

"Thank you"

On reaching the first floor, the man stops again and looks equally quizzical. Another assistant comes over.

"Hello sir, can I help you?"

"Is this the women's department?"

"Err, yes sir, what is it you are a looking for?"

"A Vacuum Cleaner"