Verb; the act of eating by yourself in a public setting; derived from the 2007 comedy Superbad in which Seth remarks to Evan, "So I gotta sit here and eat my dessert alone like I'm fuckin' Steven Glansberg?" Camera then pans to a lonely looking boy eating yogurt. Glansbergging is sadly commonplace on college campuses.
"You guys have class at noon? Fuck, I'm gonna have to Glansberg it again."
A person can can be referred to as a Glansberg once he/she has sat and eaten a meal in a public place alone. Reference to the popular 2007 film, Superbad, in which Steven Glansberg is pointed out as the kid who sits and each his lunch alone every day.
"Oh hey, there's Ryan. I bet he feels like a fuckin' Glansberg sitting by himself over there."