Quit stairing at me

Grandboy: Mama, do you know why these (points) are called ‘stairs’?

Mamasan: No, why?

Grandboy: Because you STAIR at them

Mamasan: …

Grandboy: Haha

Mamasan: … Grandboy: 😀

Mamasan: WHERE do you get these from?

Grandboy: Gwumpa

Yay! My legacy shall live on