Jimmy Kimmel is notorious for encouraging parents to play pranks on their kids, record their hilarious reactions and then upload them to YouTube so the whole world can find humor in their humiliation.
In what might be the funniest prank yet, Kimmel brought a 7-year-old boy into a fake interrogation room with a fake lie detector machine and a man dressed up as the "Truth Fairy."
He tells the kid that the machine can always tell when he is lying and proceeds to ask him questions and just generally confuse him.
The kid, still too afraid to tell the whole truth, tries to say what he thinks he should say, but eventually spills secrets like how he hates puppies, pees in the pool, and sometimes says bad words.
When he reveals his favorite bad word, Kimmel loses it, cracking up, and is unable to go on with the prank.
Hopefully this kid never has to take a lie detector test when he grows up, but if he does, he'll be a pro!