Why did he mention "hockey sticks" here?

Native speaker’s answer
Rebecca
By "hockey sticks," he's referring to the shape of the letter "L" that looks like the shape of a hockey stick. He tries to make the spelling of the word "hell" less obvious in front of the young souls by saying "hockey sticks," perhaps because it might scare them. Ex: "H," "E," double hockey sticks, "O," spells: hello! Ex: Do you believe in hell?