We don't even know what big is.
I'll never call anything big ever again. (Even if it would help an obese person get healthy.)
You're supposed to call them 'wide' in order for them to get healthy. Calling them 'big' will just make them laugh at you and remain proud to be fat.
Example:Slim girl: Hey there,
big boy. You're bigger than me.
Fat guy: HAHAHAHA. I love being big, it means I have power!
Example 2:Slim girl: You're a
wide person. Like, you can't even fit through the hallway doors and shit.
Fat guy: Hey! You just hurt my feelings... *adopts vegan diet but turns back to burgers and french fries 60 seconds later*