McCarthy, 43, who co-wrote the film with her husband Ben Falcone, said she thought it would be an easy job to shoot such a scene but lost her wig in the process, reported E! Online.
"We were just doing a test. It's hard to shoot on water because everything's moving...So we did a test and I'm like, 'Isn't it a great idea if I'm in full wig and costume? Because if we shoot some stuff, maybe it's usable.' And I'm like, 'I'm kind of amazing at this,' because I'm really a couple steps ahead. I don't really know how to ride a jet ski-I've never been on one before," she said.
McCarthy said she thought at least they got the scene but later got to know that the cameras were not on.