“He’s such a character. He outsmarts me,” she said.
When Leno suggested she keep him in line by threatening Santa would take away his presents, she replied, “If I threaten that, he’ll be like, ‘Ok, then another little boy will get that toy.’”
Aguilera says she has no intentions of keeping Max from his Christmas gifts. This year, he'll be receiving a set of Legos.
Watch the interview below: