Once upon a time, comedian Adam Sandler had a dream -- a dream that he'd get to see Shaquille O'Neal's penis. Most people want to be an astronaut, but you know.

While filming 'Grown Ups 2' with former NBA star Shaq (who's apparently one of the funniest actors in the whole movie, if that tells you anything), the co-stars spent their spare time between scenes playing pick-up games.

And when Shaq needed to shower, Sandler told Conan O'Brien he immediately thought to himself, "I gotta see Shaq's penis ... It's not a gay thing. It's like, I gotta see that."

"It's like the Grand Canyon," Conan agreed. "You gotta see it! You can't live and not see it."

Watch the video above to find out if Adam's dreams came true, or if all his plans were foiled by an enormous bodyguard whose sole purpose it is to protect Shaquille O'Neal's man parts.

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