A Robsterizum means to be a vile troll that pretends to people's faces to be of a high moral standard but to cut them down using another screen name to hide it.
2. to deny names that are yours are you,
3. Stalk women from acrossed that world.
4. To blindly agree with the person that posts above you on a message board.
Looks like you pulled a Robsterizum
by anonymous Aug 7, 2003 add a video
To be a copycat or 'wannabe' to try to be cool even though you are pathetic.
He pulled a real robsterism when he did all those lame things and attacked his own friends trying to pretend he's cool.