Looking for Teen/Frat Movie

(Over 9) years ago I watched a teen/frat movie that I haven't been able to find since. There's one scene I remember, which might help determine which movie it is. Within the first 15 min. or so, a Stifler-type character is introduced, showcasing a hidden storage/display wall inside his dorm where he displays the underwear of all the girls he slept with; similar to a hidden wall concealing weapons in action movies. I hope someone can help me find out which movie this is!