Frog will admit that he is not a young lad any more. He also suffers from duck's disease, so the legs are a bit on the long side. Turning up the hem gave him turn-ups just over the knee. His workaround is to double up the turn-up and then tuck the inner fold into the top of his socks.
"What if you have a devastating bound of diarrhoea?" he's asked. Like you do.
"I've got built-in guttering," he replies.