Celebrities Who Act Totally Different Off Camera

You're Old

Apparently, Hamm and Griffin were at the same party one night. The two crossed paths and Hamm had asked Griffin why she was there before telling her that her, "Emmy isn't a real Emmy." Later, he interrupted a conversation with her and Jack Nicholson to call her old. What's eatin' you, Hamm?

The More You Know

Tyra Banks suffers from delphiniphobia (aka a fear of dolphins).
Jennifer Lawrence has an "H2O" tattoo to remind her to drink more water.
Growing up, Katy Perry wasn't allowed to eat Lucky Charms cereal because luck was "linked to the devil." Her family also called deviled eggs "angeled eggs."
Dwayne “The Rock” Johnson has his own motivational alarm clock app, which fans can download. It has no snooze button.

Post originally appeared on Upbeat News.