after drinking it down halfway , he had to force himself to stop in order to make it last as long as possible , and returned it to the coat pocket . `` it was definitely the dimples , '' i say , smiling . i know that had to be tough , getting grilled . '' however , on his final critical test he had killed an old lady riding her bike down a country lane . instead he 'd spent the last two days alone with his thoughts and the occasional shot of whiskey for good measure . 