“The first rule when you are in a hole is to ask for a hand out!”
“The first rule of holes: When you're in one stop digging.”
“When you find yourself in a hole, the first thing to do is stop digging.”
“Don’t ask questions — that was the first rule for a quiet life with the Dursleys.”
“Healey’s First Law Of Holes: When in one, stop digging.”
“First rule of cleavage: it's not how low you go, but where and when you show.”