In Portal, where GlaDos says something to the effect of, "Didn't we have fun though? Remember when we pretended we were going to kill you and you were like, "NO WAY!". That was great."
Here it is actually.
http://www.youtube.com/watch?v=AwKq8tWi-LI
Keep this in mind when reading what I type...
I've been gaming longer than many of you have been alive.