What other people do with their bodies, including how those bodies look, is their business. Unless someone asks your opinion you should probably keep it to yourself.
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[Magenta & Cyan are side by side, with a tiny yellow square in the distance]
Magenta: Is that who I think it is?
Cyan: Oh no.
[Square arrives; stares like squares do]
Magenta: Hello?
Cyan: Can we help you?
Square: ...
Square: YOU'RE FAT AND YOUR FRIEND IS TOO SKINNY!
Magenta: Why are you so rude?
Square: STOP BULLYING ME!!!
Square: WAAAA!!! [exit]
Cyan: Are the squares okay?
Magenta: The squares are *never* okay.