[In the Drunk Tank]

I was in one of those situations which you probably get a couple of times a year where you need to relay things like postcode/reg plate/reference numbers over the phone where it's often a bad line because call centres are all outsourced. The minute there was some confusion over a couple of letters I was trying to recall the phonetic alphabet and was drawing a complete blank and couldn't even think of normal words for the relevant letters. Does this happen to you or do you know it by heart? I always actually think I do know it until I suddenly need it