When you have a mild stroke whilst developing other conditions such as down syndrome, autism, schizophrenia, etc, whilst preferring to communicate in weird animal noises instead of actual words.
Similar to that of a doppleganger, it is another individual with the same name as you whose records and/or stories are mixed in with your own when you Google yourself.
Webskipper: Hey there little buddy, did you install the new webmaster tools for the company web site?
Googligan: Yea, on my laptop.
Webskipper: Oh Googligan, (strike with cap)
A person who shares your name-- You find your googleganger by self-googling. The term comes from combining "Google" with the German expression, "Doppelganger."
"I got curious and googled myself last night-- and found a porn actress with my name! I can't believe my googleganger is a porn star!"