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Rapper Wiz Khalifa and fiancee Amber Rose are open to smoking marijuana and they're not going to hide their child from it.

In an interview with E! News, Khalifa said he's not making any changes to his marijuana use in preparation for their baby boy.

"I think it's all about how you're raised with it," the rapper said. "Before, there was a much more negative outtake on it. You know, pot and what it can do, and the effects of it.

"Of course I'm not going to be smoking right there over the baby, because smoke in general and being high is not good for a kid. None of that," he said. "But definitely he's going to know what it is - and he'll know the difference between being a child and not being able to use it and being an adult and knowing how to use it."

Rose, who is in her third trimester, said marijuana is like alcohol.

"That's how I feel about it, you know. When you're a kid, you know that you're not supposed to drink alcohol, that it's for adults and that's it," she said. "Our son is just going to know that Daddy likes to smoke."

The model also said she's planning on having a natural water birth at home, which Khalifa supports.

"I'm looking forward to the pain, actually," Rose said. "My family thinks I'm crazy, but I want to feel the pain and I want … the end result, just holding my baby and going through all that for him."