Are Spencer Pratt and Heidi Montag headed to divorce court?
Possibly -- if Heidi, 22, gets pregnant.
"He said, 'That's the quickest way to divorce,'" she tellsMTV News. "I said, 'No, sucker — you'll be locked in. What do you mean?'"
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Spencer, 25, says he isn't joking.
If she gets pregnant, "I told her there's a divorce or adoption," he says. "If she's not down with the adoption, I think it's divorce."
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Why doesn't he want a baby?
"I'm a baby. I'm not prepared," he says. "And I'm not sure the world wants a Spencer Pratt spawn."
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Four months after getting married, Heidi -- whom Spencer says is "trying to have a baby like it's going to buy a new pair of Louis Vuittons" -- says she's "ready" for kids.
"I think I was born ready," says The Hills star. "I'm very maternal. I'm very loving. I would be the best mom ever. [He feels] not quite the same, but maybe he just doesn't know he wants kids yet. I think he never wants kids, but maybe I'll have a surprise for him."