Knock down the wall
I remember this being used when we would have nerf/ rubber band fights on the 1st floor(in liu's house). One team would make a wall and liu would use a big bomb nerf or something large to try and in the end usually knock down the wall. He would yell "knock down the wall" as he fired his weapon, also before and after could be included. He would get excited and jump up and down sometimes using his one free arm loosely to make a fist that he would wave up and down also. This is only perhaps when the wall took longer to knock down and was finally knocked down, giving great rejoice.