I made one of the best drawing I've made in my life. We were learning the Byzantine art in art class and we had to make a "Still life" drawing based on a real one. My friend, Brandon is a goofball at those stuff (so am I but I'm ten times better) and he paid me Q.10 to make him one. I agreed because it was just a drawing and with that I could at least buy two Cokes (irresistible drink).
However I turned out to be proud of that drawing and I felt so hurt to sell it that I took it some pictures to have a memento of it... And then he wasn't even sure if to buy it because it's impossible to believe he was the one who made it.