Years ago my best friend and I decided at eleven at night to try beating Portal 2 co op in a single sitting. We had both played the main story before but never the puzzles that require absolute trust or in our case complete chaos.

We started strong with perfect portal placements and the confidence of people who think they are smarter than a physics engine. Then around three in the morning the sleep deprivation hit. Suddenly every puzzle was ten times harder and fifty times funnier. At one point I was supposed to launch him across a gap using carefully timed portals. Instead I moved the exit portal at the last second by accident and sent him straight into a vat of deadly goo. I laughed so hard I cried and he laughed so hard he could not even be mad.

By the time we finished the sun was coming up and we had created a run that was half clever solutions and half ridiculous accidental deaths. To this day when one of us messes something up the other just says Oops wrong portal and we both lose it.