The definition of friendship...

...is when the people whose daughter you were babysitting on their wedding anniversary come home earlier than expected, while you still have your sheets and towels in their dryer, and they watch the rest of the episode of Futurama where Richard Nixon's head runs for President with you, even though they've already seen it, and then, after you've folded the clothes from your first load of laundry, break out the Star Wars video game, where you get to be Chewbacca.