Leave it to Heidi and Spencer Pratt to exceed the cheese level on the red carpet.

The barf-tastic duo showed up at last night's premiere of G.I. Joe -- with Heidi's issue of Playboy in hand!

"It's an honor," Spencer said of seeing Heidi on Hef's pages. "I feel like I did something great, like I should get a trophy!"

I'm sorry, like he did something great? 

What's worse is that Heidi eats his crap up!

"It comes out on [Spencer's] birthday," Heidi told Access Hollywood, "August 14. Happy birthday hubby!"

And, just so you know, the Bible-loving Heidi doesn't think of her nudie pics are well, um, nudie pics. No, they are "art."

"[Playboy] kind of had a vision... and we brought in Matthew Rolston, who is a very well known amazing photographer," she explained. "So, it's more art."

"Beautiful art," Spencer added. "Not like Picasso art, real beautiful art, you know what I'm saying?"

Did he say "not like Picasso art, real art?"

I can't even believe what comes out of his mouth.