Before I ask my question, I am not a slacker, I have a personal matter that I need to attend to for two days?

You could say that you got bitten by a bug and got cellulosous- the doctor nearly always grants the nest day off from work because it's a very serious condition. Other than that, you could go for a more conventional approach and say- pink eye, strep throat, vomiting, stomach virus, etc. You could be blunt and just tell your boss that you're taking a sick day. You could be discreet and just say that you don't feel good. Or (and this is my favorite) you could grind up skittles, coke, lemondade, and pizza, stick it in a cup, and "vomit" somewhere where your boss will notice- then he'll just tell you to take the day off- and you play the rest by ear.