How hot is it in Hameln?

Well first of all i'm not really sure,but i can reassure you that the person who wrote the song might have been feeling angry.I say that because hot gives you the picture of fire and that shows anger...

The Hot Coco song from the Polar Express

The song "Hot, Hot, Hot" (Arrow song) was written by Alphonsus Celestine Edmund Cassell (or Arrow), and was originally done by Buster Poindexter (real name David Johansen).

some one who was feeling hot at the time

Not, not, not to any stocks hyped on the Internet.