Word to the wise: Don’t mess with Kourtney Kardashian, especially when it comes to her kids. The reality star, who is mother to two children under five year (Penelope, 1, and Mason, 4), recently returned from a family trip to Mexico — and she has some words for a certain type of airplane passenger.

“People on airplanes are so wild these days,” Kourtney’s tweet begins. “Telling other people's children to cover their mouths. Cover YOUR mouth.” While we can’t confirm Kourtney is reacting to a specific incident involving her own kids, our best guess based on her passionate response is that she may have directly encountered this somewhat nosy behavior herself on her return flight.

Sure, it’s good advice to cover your mouth to sneeze or cough — especially when in an enclosed space like an airplane — but we have to take Kourtney’s side on this one. Exposure to unwanted germs is definitely annoying, but not nearly so much as exposure to unwanted parenting advice.

Then again, we’re a little biased since we kind of adore Kourtney — especially for how protective she is when it comes to her little ones.

What do you think? Is Kourtney justified in being fired up over this issue?

Source: Kourtney Kardashian on Twitter