By Justin Sink
When CNN host Jake Tapper quipped that the former 'N Sync member wasn't "hardcore" enough, Rubio laughed.
"Justin Timberlake?" Rubio said. "No."
Rubio has frequently referenced his love of hip-hop in interviews and from the Senate floor. During Sen. Rand PaulRand PaulOvernight Energy: Clinton makes her pitch to coal country Rand Paul calls on Clinton to apologize for coal job losses Five ways Trump will attack Clinton MORE's (R-Ky.) filibuster earlier this month, Rubio quoted lyrics from Jay-Z and Wiz Khalifa.