Sandra Bullock and Channing Tatum met in the principal’s office after the girls had a fight

Sandra Bullock And the Channing Tatum They had real-life drama long before they co-starred in the new action-adventure movie The Lost City. (Watch the video below).

The two, they said, had been called to the pre-school principal’s office because their daughters were arguing. The school simply wanted to know how the children could reach a breakthrough.

On “The Late Late Show with,” Tatum explained, “We have two very strong-willed little girls… James Corden” Wednesday.

A day after Bullock says it was another “fight,” she gets a call from the school wondering if she’ll have to call Tatum or his ex-wife Jenna Dewan to deal again with the conflicted children.

But the school has come up with a new solution: challenge the two girls to a contest to see who can be nicer to the other.

“So they were like bringing each other little Dixie water glasses,” Bullock said.

Bullock’s daughter Lily and Tatum’s daughter Everly are now a few degrees away from preschool, so perhaps their rivalry at last is Water Under the Bridge.

Meanwhile, the two actors have reached their friendship level with a “common level of stupidity,” Bullock said.