TL;DR I had a tiny bit of water in my Hydroflask when i went through the security checkpoint and TSA took it.

A cruel TSA woman said she couldn’t empty it or run it back through the belt. If I wanted it, she said I’d need to go to the exit with all my bags and re-enter the security line.

I told her that my flight already started boarding and that I’ve had TSA empty a bottle and/or run it back through the machine. In response she held it over the trash can and said "so make your flight or take the bottle - your choice.”

She was my true hydro homie. Give your bottle some love today. Pour one out.