If that's true or not, or if he's just a crazy old guy or if it's all an act.
He has his own channel dedicated to his meltdowns.
http://www.youtube.com/user/TheAngryGrandpaShow?feature=watch
Fair warning: Not Safe For Work
&feature=player_embedded
Charles Marvin Green Jr. (born October 16, 1950), known as The Angry Grandpa, is an American Internet personality.[1] His videos have been featured on HLN's Dr. Drew,[2] MTV's Most Shocking and Pranked, Rude Tube,[3] and TruTV.[4] His YouTube channel, "TheAngryGrandpaShow", has over 200,000 subscribers and over 58 million views, as well as a fanbase known as "Grandpa's Army", in which he refers to fans as his "young'ins".[5]
The videos feature Green, who has a bipolar disorder (which he takes medication for)[5] reacting, usually angrily, to several things, such as pranks pulled by usually his son, Michael, a professional wrestling website webmaster,[5] and current events. In a 2013 article, Green stated that he has destroyed numerous articles of furniture, along with electronics, including laptop computers, televisions and cellphones in his fits of rage.[5] In April 2012, Green had a video posted to his main channel aimed to publicize the proposed sale of his the trailer park where he resided at the time, Trailwood Trailer Park, in North Charleston, to a developer who had aimed to rezone it to light industrial to build a road to a new Boeing plant in North Charleston.[5][6] The sale, however eventually went through and Green relocated to another trailer park later in that same year.
http://en.wikipedia.org/wiki/Angry_Grandpa