Some babies laugh and shake it off. Others grimace, stumble around blindly, recoil like they've been hit by a truck, flail their arms, or stare reproachfully at the cheese-thrower. Some eat the cheese. Generally, all look confused.
We know this thanks to a week-old viral phenomenon called the "cheese challenge," in which people toss shiny slices of processed cheese at unsuspecting infants and share their reactions on social media. Depending on whom you ask, it's either extremely hilarious or proof that the internet should never have been invented.
The highlight of my day was watching this video of someone throwing a slice of cheese on their baby.