and had spent a full half hour in vain efforts to climb on his own back.
I tried reading this aloud to my wife and could not control my giggling when I came to the last sentence. Vainly I tried several times but just burst out in uncontrollable, breath-robbing laughter. I was about to copy it and text her when I finally managed to choke out the last five words one at a time. Tears are still rolling down my cheeks.