Pros and Cons of Having a Penis on your forehead
 

Pros: None really other than the ability to laugh it off when someone calls you a dickhead.

Cons: Having to taste a girl's asshole everytime you fuck her, chronic shoulder pain if you jerk off too much, piss dribbling onto your face when you shake, always having to do the "Long bangs 80's head toss" to get your balls out of your eyes, your sideburns would look ridiculous, and buying hats would be an absolute bitch!

How about having also a pussy, or a third hand, and so on ...

PRO: You can say to any girl...
Hey, as long as I have a face, you have a place to sit...

And NOT sound like a total pervert...
Your offering a service dude !!!