To media share the song Creed - With Arms Wide Open or any other song from the band Creed in a Youtube stream to attempt to get the stream taken down for policy violations. This originated in a twomad stream where he got his stream taken down for said policy violations. Some say that this event was fake.
Not actually creeping up (ie) behind someone, but could also be depending on the given situation.
To know enough about a person that you don't actually know (ie where this person works). Creeping would consist of using that small bit of knowledge you have about said person and going on the popular website called facebook and attempting to look them up.
Amy: You know that guy we saw today at lavish&squalor?
Katie: Yeah he was super-cute!
Amy: You know right? I just totally went on facebook and looked up the Lovin' Lavish&Squalor group, found a picture of the guy (which was tagged) and creeped his profile. He's super sexy!