I took a metal water bottle into the Sauna (was set at about 190 Fahrenheit) and about 15 minutes in, I grabbed my water bottle, and burnt the fuck out of my hand...

done that shit myself once, but with a metal bucked which we used to to have water in to pour onto the "heater" or wahtever its called, well you use a huge wodden spoon to throw the water, but I though "Lets just grab the bucked and throw all the water thats left on it"
well ...OUCH lol.