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when something is so bad it makes you want to punch a wall and steal someone else's lunch money at the same time.
My math test was a sauna of anger and envy. I failed and my best friend got an A.
Watching my ex post a vacation photo while I'm stuck at work is a sauna of anger and envy.
When my dog ate my homework and my teacher gave me a zero, that was a sauna of anger and envy.