English

Verb

forget oneself

1. (idiomatic) to lose one's dignity, temper, or self-control.
   • 2011 August 28, Vincent Hogan, “'Where Rovers go from here could be thrilling or terrifying'”, in Irish Independent:

     You see, the easy thing would be for Rovers to forget themselves.

   • 2005, Elbow, Forget Myself

     No I know I wont forget you but I'll forget myself if the city will forgive me.

2. To become unmindful of one's own personality; to be lost in thought.