Olivia Munn is fast-approaching first-time motherhood, but she's not feeling particularly ready for the new gig.

During an interview on The Ellen Show, she hesitated a smidge too long when guest-host Stephen "tWitch" Boss asked if she and partner John Mulaney were feeling prepared.

"No, I'm not prepared," she said with a laugh. "A lot comes at me and I don't really know what to take in."

So far, she's learned that she needs a Snoo – even though "I don't know what it is or why it's so important" – and that onesies with snaps are a non-starter. She's been test-driving "extremely different" rocking chairs and struggling to prepare for the big day.

"I want advice from people, but there's a lot of questions about 'what's your birth plan?'" she said. "My birth plan is to follow what the doctor thinks, and then I have people telling me, 'Well, you have to have a birth plan so that you don't just get pushed around by the doctor.' But I'm like, the doctor is the one who knows how to deliver a baby. I'd rather have their birth plan than my birth plan."

Understandable! And, in case it helps, Olivia, here's a little info on that Snoo you've been hearing about.