A very distinct genre of metal. Consists of very angry men shouting down microphones and being generally angry on various instruments. Such a display is enough to inspire fear into the hearts of lesser men, but not Cliffy.
Generally members of a band in the genre of Cliffy metal are large and can be described as 'meat houses' or 'brick-shit-houses' Very very angry and enjoying flying headbutting people in mosh pits and of course drinking 50 cans and being perfectly sober.
Person A- Did you see that band, they almost made my ears bleed before he broke my nose 'cause I wasn't metal enough.
Person B- Yeah, they're Cliffy metal.