Portal 2, released by Valve in 2011, features GLaDOS as the sardonic artificial intelligence who guides and torments the player through its test chambers. Near the end of the game she appears to offer reconciliation, saying she thinks they can put their differences behind them for science, before delivering the abrupt insult that became this clip. The line spread through gameplay videos, edits and soundboards as a shorthand for playful betrayal, and it remains popular because the sudden tonal shift is instantly recognisable even without the full scene.