Remember the Great Columbia University Frat Boy Drug Bust of 2010? Frat boy cocaine kingpin Harrison David is heading to Rikers Island: He turned himself in today to serve six months in jail, followed by five years of probation. With good behavior and time served (his plastic surgeon father refused to bail him out for two weeks after the arrest) the 20-year-old will likely serve three and a half months.

Today saw the arrest of five Columbia frat boys accused of selling every drug a co-ed could ever need. We located three on Facebook earlier today. Here's the fourth: Stephan Vincenzo, "campus character," Reggaeton singer, thrower of "sick" parties.