SnewMouse

One that trolls the internet setting up multiple accounts for the purpose of messing with people and causing trouble. Sets up multiple accounts within the same place and proceeds to argue with each other. Often claims to be homosexual.
One who gains another's trust, then uses their personal information to harass or embarrass them while online.

Also can be known as a Mouse, Snoopy's Doghouse, Dr Doghouse, Snooperella.