What are the adaptation advantages of a forehead boss?

[Dessy]

Happen to have one, both lumps even sized.

[Equilibrium]

What is a forehead boss? This guy? :p

http://www.craveonline.com/images/stories/2011/2012/February/Comedy/final-boss-internet/final-boss-internet-forehead.jpg

[Dessy]

What is a forehead boss? This guy? :p

http://www.craveonline.com/images/stories/2011/2012/February/Comedy/final-boss-internet/final-boss-internet-forehead.jpg

Forehead with 2 lumps on the frontal bone.

36968

Left guy