Remember when Arnold Schwarzenegger pulled one over on Maria Shriver a few years ago, fathering a child out of wedlock with his housekeeper?
That wasn't cool.
But the former Governor of California fools people in the following video for a much better reason:
He's undercover at Gold's Gym in Venice Beach to raise money for After-School All-Stars, a nationwide program that provides free mentorship, homework help, tutoring and fun activities to students from low-income families.
It's pretty funny stuff, and it's educational to boot: Remember to drink A LOT of water, people!
Of course, this footage got us thinking: What has been the best viral prank over the past year or so?