A phrase that someone says when something feels really good, like taking a hit of weed or getting a blowjob. Slang for "That's it man".

A casual invitation / threat used by an individual that is not afraid of fucking someone up.

Das it Mane is a phrase often used on a Facebook page titled satan which may have it origins in das it, which is pHispanic slang for the words "that is it" The word "Mane" in Das it mane most likely is an intentionally pcute misspelling of man. The phrase probably originated from the admins of the facebook page, but nobody has bothered to verify this because nobody rele gives a rat's ass about das it mane anyhow. I don't even know why I myself bother to writing about it. I must be bored.