alt-tab out

1. In Microsoft Windows, to switch from one's current window to another by pressing the keys ALT+TAB. (Sometimes written "alt+tab out.") Every time I try to alt-tab out of the game, the computer gets really laggy or crashes altogether.

2. In PC gaming, to switch unintentionally to a window other than that of one's current game. The game was alt-tabbing out whenever the mouse scrolls to my second monitor, so I've had to install software that disables that functionality during gameplay.

3. To cause a computer user to switch unintentionally from the window of their game to a different one. In this usage, a noun or pronoun can be used between "alt-tab" and "out." These blasted Windows notifications always alt+tab me out of CS:GO at the worst possible moments.