The 44-year-old actress has two kids -- Maya, 15, and Levon, 12, with her ex-husband Ethan Hawke, reported Femalefirst.
"They're much smarter than I am and better behaved. And, thank God, they're funny, too. It would be intolerable to me to have a humourless, boring child - I'd have to send it back," she said.
Thurman portrays a TV executive in NBC drama 'The Slap', which tells the story of the aftermath of a party when a man slaps his friend's unruly child, but the actress insists she doesn't have any issues when it comes to telling her kids off.