If you mean immediate symptoms, you would get sick.
Longer term effects will depend on how much physical activity you do each day. If you eat too much of any thing specially high fat and carb content food like Pizza, it can make you collect a lot of body fat if there is not much physical activity.
Well, your arteries get clogged, which doesn't allow your blood to circulate properly, your skin breaks out from the oil and grease in the pizza, and you get fat unless you work off all the calories you consumed while eating the empty carbohydrates and such in the crust.
You get bloated.
nothing
You puke!!
You die
They have stomach ache.
You die with diarrhea
you will probably get sick
i wouldn't eat too much becauseyou could get posiend
If Yuu Eat Too Much Yuu Get FAT
you eat cake
Only happens when you eat too much or eat too fast. If it happens when you did neither of those things, you should see a doctor. It might be serious.
it depends if they eat too much cuz if they dont they will be skinny.if they eat too much that means there fat