hotter than a two dollar pistol

Hotter than a two dollar pistol is an idiom used for when something is hot, usually an item, but it can also be related to the weather outside on a particularly hot day. The saying comes from the fact that a two-dollar pistol which came out in the 19th century was considered a very cheaply made pistol which got really hot to the touch after it was fired. For this reason, the idiom hotter than a two dollar pistol is used to describe something that feels hot to the touch.