so all the fuctions are at a party. the ln function is dancing with the x^2 function, a^x is having a drink with the y=5x function, and so on. pretty soon, the ln and 1/x function notice the e^x function. so they go over and ask him, "what's wrong?" he says, "see the x^3 function? she's so beautiful, but she just won't dance with me." they reply, "oh that's so sad. but you're sitting over here all by yourself. to get the girls to notice you, you need to integrate yourself." he replies, "but i already have 5 times!"