Riddle: I am filled with hotness. I don’t mind how hot water is. What am I?
In order to solve this riddle, we need to consider objects that are not affected by hot water even though they are filled with heat. We can pour hot water in many items, but this does not prove that all these items are temperature resistant, some may crack and break.
As stated in the second part of the riddle, the answer must be a heat-resistant object. So, after a little reflection, we can deduce this object easliy. The most common item we use to keep hot water safely is a hot water bottle, which is resistant to tempetures of the water.
Answer: A hot water bottle.