Gone for a burton

Gone for a burton, I have read the previous explanations, however have one of my own. During WWII most aircrew went to the old 'Burtons' billiard hall in Blackpool to learn Morse Code over the course of only a week, so when asked fellow crew members would say 'gone for a burton' can anyone collaborate? I was told this by my dad who was a wireless operator in 49 Sqdn. Lancasters.