A common sense epiphany is when you know something in the back of your mind but it doesn't really hit you or you don't realize the fact until you've experienced it first hand. I have just had a common sense epiphany. It even inspired me to get out of my nice and cozy bed at midnight to share with the world.
Stupid people do stupid things.
See? Common sense things, that don't come to fruition until you have dealt with them for yourself in a real world situation.
Here's a complemented thought-
Is it the stupid person that make the things stupid or is it the stupid things that the person does to make him/her stupid?
Tell me what you think.