The actress and her co-stars, Liam Hemsworth and Josh Hutcherson, agreed to have tattoos inked as the final film wrapped, but only Lawrence went through with the plan.

She also had the symbol for water incorrectly etched on her hand, and now she feels like a fool.

"It's just to remind to me to drink more water," she tells U.S. chat show host Conan O'Brien. "But I have 'I'm stupid' tattooed on my hand permanently... because it's H-squared! I didn't go to school. I'm an uneducated idiot."

"I mixed the colour because I never wanted a tattoo," she adds. "We were, like, together after The Hunger Games and Josh was gonna come and meet up and then everybody was getting tattoos and so I was like, 'I don't wanna get a tattoo', so I got one the colour of a scar and I got it on wrong and then Liam bailed and didn't get a tattoo, and Josh never got one either. I'm the goose."