I was. Today. Went to Tescos to do the weekly shopping. Spend £40 and get £5 off next shop. So, I roughly added up what was put in the trolley, but very soon lost count. Anyway, when I thought I might have enough, went to the checkout. Came to... £40.00 EXACTLY!!!!
I think I should have bought a lottery ticket too; last time I bought one of those was 2004.