Shaq, Kendrick Lamar shop for soap in new American Express ad

Who knew Shaquille O'Neal was such a big fan of soap.

The NBA Hall of Famer has joined forces with American Express for a series of commercials promoting small business, and the first shows him with Grammy Award-winning artist Kendrick Lamar looking for soap at a shop called Soaptopia.

O'Neal told USA TODAY Sports there's more commercials coming, with "top-10 A-listers, not just regular people."

"These are people that, once you see the spots, you'll be like, 'Oh my God, they should do a movie together,'" he added.