Duphelshankie Edit Meaning

1.

a Fictional object, often used in a wind up in my office.

Biffo could you pass me the Duphelshankie, I think Chris had it with the Dubetron valve.

2.

an annoying action where you make the letter 'F' in sign language and put it below your waste and hit people when they look.

someone falls for it. you hit them. they hit back.