Aaron Baker, better known as PhoneDog Aaron laid down a challenge earlier this morning via Twitter. Aaron promised that if he got to 20,000 followers on Twitter by Monday, April 16th by noon EST he would shave his head. For those of you who don’t know Aaron well, Aaron loves his hair. He has an obsession with it. Follow him on @phonedog_aaron and you could win a Sprint EVO 3D, a PowerBag and more!