By Faith Cummings
Nov 30, 2016 @ 10:15 am

So many hilarious moments take place during a pregnancy and among them are people's reactions to a growing baby bump. And Natalie Portman is no exception to the rule.

During her appearance on Tuesday's Tonight Show, the Jackie star talked about the funny assumptions people make with how many more months she has to go before giving birth. "I'm a small person in general, so you show a lot faster and a lot more," she confessed on the program last night. "Everyone thinks I'm about to pop and give birth at any minute, but I have months to go."

"I went to this store the other day to buy water and the guy at the checkout counter was like, 'Almost, huh?'" the actress recounted. She responded with a laugh, '"No, not at all!"

Portman then played a game called Password with the host and teamed up with Star Wars director J.J. Abrams against Fallon and legendary crooner Neil Diamond. In the friendly competition, the Academy Award-winning actress and talk show host were each given a "password"—hence the name of game. They were then to give a one-word clue to Abrams and Diamond, so that they could then guess the word. Watch their antics and find out the winning team here:

We hope there are a few more funny moments like these ahead for the mother-to-be! Catch Jackie in theaters Dec. 2.