Want to find This movie

Theres this Rich man he Got a blackout and waking up at the Beach, mabye hes fall off a boat cant remeber. Then hes Moving in to a poor family thinking that his wife. The man svare very lazy and dosent help With the Bills. Then hes Got a job, and work for at Rich familiy. At the end hes ginding out hes Rich and have a Big boat

Please help