hard to define transitions

1) the temperature between yummy coffee and dark, acidic water
2) the space between being complete strangers and being friends: "friengers"
3) age 22 to 27: an old dick to your younger friends and a young asshole to your older ones
4) the moment you realize you are wrong
5) the area between a coherent and accurate memory and a fuzzy and questionable image that could have been a dream