Sandy Paton [see above lang syne - 22 aug 03] learnt it from Robin Hall, a Glaswegian, who claimed to know its author, Morris Blythman aka Thurso Berwick. In case any benighted person misses the point of his pseudonym, Thurso & Berwick are two Scottish towns, the first in the far north & the other right down south on the English border.

~M~