When your 100% socially inept boss's boss stops by the cake for people's anniversaries of working at the company, and he says "happy birthday".  Smiles and walks off with cake like a jackass.

When you find out via internet that someone you know probably has fake boobs.

When you know someone has a ridiculously small forehead, either/or too much hair, but you're still shocked to see it.  Like it's some circus side show you cant stop staring at.

When you realize why your old college roomate wore 18 virginity bracelets, because you now see her younger sisters wedding pictures on facebook and her younger sister already has a kid.  Ohhhh.!  Now I get it.