A vocal style originating in late 1980's involved with underground grindcore/Brutal Death Metal bands. The style is usually used by either inhaling or exhaling while coarsing your throat to either sound like a high pitched pig squeal, or a low pitched gurgle. Pig squeals have now become a style that is seen more in the light now due to hardcore/metalcore bands that have been recently becoming increasingly popular.
Job for a cowboy definently didn't invent pig squeals, and they suck.
a form of vocalism used by metal bands. usually made by inhaleing but sometimes they are exhaled making the users throat vibrate to create the sound of a pig squealing. the most common thing to say while pig squealing is bree.