5. The Guys Have a Weird Friendship With Kimmel's Dad
The topic soon came up of the weirdest fan interactions they've ever experiences, and Niall revealed that he had a run in with Kimmel's dad in the studio bathroom before the show.
Kimmel thought they were kidding, at first, until Styles chimed in that Kimmel's dad shared a lot of information with them, such as his blood type, Kimmel's career history, and the details of Kimmel's sister's housing situation.
6. Kimmel's Family Celebrates Niall's Birthday
Kimmel then revealed that his family throws a party – complete with a birthday cake -- every year on Horan's birthday, because his niece is in love with the 22-year-old Irish crooner.
That's some dedication to being a fan, right there.