What is the meaning of Fuck_off?

1. To go to hell; to disappear or go away; to screw oneself.

   To go to hell; to disappear or go away; to screw oneself.

   To leave unexpectedly.

   To fritter; to fuck around.

   1. To annoy, irritate.

      To annoy, irritate.

      To abandon.

      Used other than figuratively or idiomatically: see fuck,‎ off.

      Go away! Get lost!

      An expression of disagreement or disbelief.

      Source: wiktionary.org