Widely ridiculed on social media for his lack of knowledge, Mr Harris apologised for what he described as an "awful boo-boo".

And be clear that the illness is called cancer — not a “boo-boo” or a sickness.

It might be your internet company’s fault, a boo-boo with your home equipment or interference from your neighbor’s Call of Duty game night.

He has two boys, ages 4 and 2, who Davenport said don’t really understand their father is missing most of a finger but do ask if he has a “boo-boo” on his hand.

Some attestation forms seem impractical, requiring parents to interview their pre-school-age children about their health, when some that age can’t distinguish between a boo-boo and a sore throat.