Celestia: If you eat all your veggies little one, you could become as tall as me!
Luna: Huh? And having a butt big like your? No thanks! I prefer cakes.
C: W-what makes you think that eating only cakes would make you look better?
L: You tell me. I'm just a foal.
C: W-well... Eating cakes contains lot of sur-, er, energy.... and calories and they go...
L: In your butt?
C: Uh.... y-yeah. Something like that.
L: So.... if I eat veggies instead of cakes, I won't get fat and grow as tall as you?
L: Then, why you eat more cakes than veggies? Is it because you ate too much veggies and now you need to eat cakes because you lack of energy?
L: Or maybe you you want me to eat all the veggies so I would not eat your cakes?
C: N-n-no no no.... *deep breath* You see... As a old pony...
L: How old are you?
C: Not now.
L: How old are you?!
C: *sigh* It is not nice to ask a mare for her ag-
L: HOW OLD ARE YOU?!
C: I'M OLDER THAN YOU! IT IS WHAT IS-
L: WHY ARE YOU SCREAMING? I'M NOT DEAF!
C: .... I.... I.... *sigh* I'm old enough to rule Equestria.
L: You are that old?
L: Do you still grow up?
C: Uh, no. Why?
L: So, why are you still eating veggies? Aren't you tall enough?
C: Well, it is for staying healthy. Even at my age.
L: Wait! Mom said we were immortals. Then, why are we eating healthy if we can't die?
C: *sigh* So our subjects won't consider us a big cake eaters who only think as their next sugary rush!
L: Oh! Now, that explains why you are eating them in your bedroom. But how come your butt got big-
C: You know what? Let's eat that huge cake they put in the royal freezer together!