Über Frosh
To be similar in manner to a freshman, regardless of age; freshman-like. (note that an Umlaut can be used, but is not necessary)
Billy just wouldn't shut up today, he's such an Über frosh.
Billy listens to (insert crappy band name here). He's such an Über frosh
Billy listens to (insert crappy band name here). He's such an Über frosh