"So when you fellows _impshied_ down the tunnel I slipped in after you. You wanted looking afters just fancy, nosing around a dug-out and not taking any bombs. I kept out of sight while the Captain was taking stock, knowing he'd send me back if he twigged me. Then, when the Boches tried to hold you up, I nipped behind and slung a bomb at 'em. By gum! It was a beauty, though for the life of me I don't know how we got blown out here. It wasn't my bomb that played a dirty trick like that, and it wasn't fifty tons of high explosives. So what was it? Anyone got a drink? My throat's like blotting-paper."