Kim Kardashian recently learned a valuable lesson about disturbing her son's sleep.

The reality TV star shared her unforgettable encounter with a sleeping Saint.

While taking selfies with the sleeping child, the mother-of-four gushed about her son.

The doting mom tried to flaunt her son's cuteness; however, things took a wrong turn.

Kardashian must have gotten too close to Saint, who retaliated with a punch.

The boy accidentally hit his mother's eye while turning in his sleep.

Following the encounter, Kardashian declared her son was not as cute as she believed.

Last December, the socialite marked her son's 7th birthday at an NFL game.

Kardashian previously shared her daughter North's obsession with the rapper Ice Spice.