beat it vs slide off

beat it

verb
  • To leave; to go away. 

  • Used other than figuratively or idiomatically: see beat, it. 

  • To masturbate, usually a man of himself. 

slide off

verb
  • To leave a place, a meeting, etc., without being noticed; to slip away, slip off. 

  • Used other than figuratively or idiomatically: see slide, off. 

How often have the words beat it and slide off occurred in a corpus of books? (source: Google Ngram Viewer )