Russell Brand and Katy Perry to have 'naked wedding'

"We are going to do the wedding naked! All the families will be naked!" Brand joked to PEOPLE at Sunday's 2010 Grammy Awards.

He's kidding. "We're still deciding what to do," he says. "There's no juicy details yet."

But actually, a naked ceremony is one of the less quirky visions Brand has had for the wedding day.

"All my dream weddings don't make sense," he says. That's probably because his dreams -- the literal, nighttime kind -- can be a bit hallucinatory.

"The vicar will start melting," he says. "The people in the front row will turn into people from my school. And then everyone will only say the word 'potato.' "