I'd order a pickled wally without knowing what it was, just on principle.

Yeah, in general, so would I. Especially at only 50p :)

Although yesterday I was fairly sure I didn't want a pickled egg, and I figured a wally was going to be a pickle of approximately similar magnitude, so felt I wasn't going to want one.

Bonus points if they serve rock, because nothing beats rock. 8-)

Paper, surely!