[PaulWay] You are almost correct. Face Pyjamas was a kind of euphemism game, as originally conceived, and as I tried to make clear in my initial move, above. But some seem to have found the concept impossible to comprehend, and it's now a sort of MC Dictionary.

Folly Bucket - the polite name for a device originally invented in Geneva, Switzerland, as a sort of portable vomitarium cum chamber pot for young bloods intent on getting helplessly drunk without sullying the pristine streets. The term is now used to describe the sort of person who ought to carry one.

Velvet Scabbard

I think I overheard someone explaining that one at work today; it's the term for some piece of 'assistance' rendered by management to employees that is supposed to save time and money but is actually practically useless. E.g. "I wanted a sword and he gave me a velvet scabbard." The velvet bit refers, I think, to the fact that management find these things quite attractive in a "buzzwords and warm glows" way.

I've got one for you: Pudding elbow

Embarrassment caused by over-reaching oneself. Derived from the fate of those who, in reaching for the cream, dangle their sleeves in the Charlotte Russe.

Cornish Date?

This is a thing rather like a haggis, but instead of wholesome meat and vegetables it's filled with dried fruit. It was originally made for tin miners to take to work as a kind of packed lunch, the rationale being that it was so revolting it would make working in a tin mine seem not so bad after all.

An acquaintance asked if I want to try salty surfing. Do I need a licence?

This is simply another name for bodysurfing, where you use yourself as the board. More salt in the face, you see.

What do you think of a round of foot crepes?

No thanks. Those large, round discs of dead skin from the soles of your feet are hard to make palatable.

Purple lampoon?

As I see it, it's a guy sharking after hours in Cleveland.

I've heard this one but not sure of its meaning: A frayed rope in the pulley.