One who bangs many dooples. What is a doople? And what does banging mean? This is all open to interpritation. It is in fact a play on words of dopple ganger, but this is much cooler.
One who arrogantly takes control of a situation/conversation when uninvited altogether. Not only does the individual decrease their social status within the group, they often overcomplicate even the simplest of desicions. Doodlebangers are a rapidly growing group of inappropriate beings usually hailing from rural regions of any civilised country.
Person 1: Let's play some music from my iphone while we sit and drink.
Person 2: Sure
Doodlebanger: Let me get my car over here and we can listen to it on a really goodsound system.
Doodlebanger 2: Yeah go get it but make sure it's angled correctly.