Happy Friday … here’s a filthy, but happy, Jason Momoa getting hosed down after riding on a dune buggy.

The Hollywood hunk and star of the upcoming “Dune” remake flaunted his hot bod in a series of photos … where he’s caked in mud … giving a thumbs up while trying to clean him off.

Jason captioned the pics … “like a pig in sh**.” He added … “hard to explain this one. but i had an amazing day. now i need a dune buggy. dune coming soon aloha j.”

The actor’s dune buggy escapades clearly are designed to promote the new feature adaptation of Frank Herbert’s science fiction novel … which costars Rebecca Ferguson, Zendaya, Timothee Chalamet, Dave Bautista, Josh Brolin, Oscar Isaac and Javier Bardem.

But, who really knows — or cares. Bloody Marys are a good idea for heading into the weekend … but might we suggest Muddy Momoas instead?