..you're not playing the Sims, and you accidentally press one button, which actually makes the game behave more like Sims! (I found a key combination in another game that removes all limitations on scrolling. ALL of them.)
..you're on holiday, can only take one game, decide to take the one that's in your PC, halfway there you realise it's
not the Sims, and start pressing buttons like the Sims, even though you only played this game a few hours before.