'Bayou Billionaires' -- Humping in Dubai

Here's a photo of the super-rich couple from CMT's "Bayou Billionaires" doing what most oil moguls do best ... spoiling themselves!!!

Gerald and Kitten Dowden -- who became a real life "Beverly Hillbillies" family when they found oil on their property in Louisiana last year -- recently booked a trip to Dubai ... and TMZ has the pics.

Ever since the family struck it rich, they've been treating themselves to the finer things in life ... and when we asked why they decided to travel to the Middle East, Kitty told us ... "because we CAN!”

Mama Dowden says the couple rode dune buggies, participated in an authentic Bedouin dinner ... and of course, treated themselves to a camel ride.

Kitty adds, "We would definitely go back again, it was a great experience!"