What is Beavis Engine?
1.
A stste reached by a person when he/she is excessively high on drugs such as cocaine or amphetamines, and is unable to stop talking - mainly beavisesque gibberish and to the utter annoyance of the poor individual who has to listen.
Speed freak : blah blah blah blah blah blah blah blah blah blah blah blah ...(mindless on going shit)...
Normal person : "Dude you've reached Beavis Engine ."