What is metal as hell?

Metal as Hell: A Deep Dive

"Metal as hell" is an idiom used to describe something that is intensely heavy, extreme, powerful, or embodies the spirit and attitude associated with heavy metal music. It is an expression of enthusiasm and admiration, suggesting that something is exceptionally awesome and embodies the stereotypical characteristics often linked to the genre.

It can refer to a wide range of things:

The phrase is often used in a positive and humorous way, celebrating the raw energy and rebellious spirit associated with the culture of metal. It's about embracing the extreme and finding pleasure in the powerful and unconventional. (Link: https://www.wikiwhat.page/kavramlar/Metal)