be bouncing off the walls
To be very active and energetic to the point of hyperactivity. How much sugar did you give the kids? They're bouncing off the walls!
be bouncing off the walls
INFORMALIf someone is bouncing off the walls, they are acting in a very uncontrolled and excited way. After another cup of coffee Holly was bouncing off the walls.
be ˌbouncing off the ˈwalls
(informal) be so full of energy or so excited that you cannot keep still: He was bouncing off the walls so I told him to go out for a walk.