The number one rule of dining out: treat your waiters right. You have no idea what's really going on behind those kitchen doors.
In honor of National Waiters and Waitresses Day on May 21, Mashable asked anonymous secret-sharing app Whisper to scour submissions from wait staff who came clean. From totally gross to oddly heartening, these secrets serve up answers to the the things we've always wondered about waiters.
If you've ever thought about what happens to your uneaten leftovers, or how far your servers will go for tips, consider these confessions enlightening.
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Check out Whisper for more anonymous secrets from wait staff.