Justin Bieber Raps on ‘Leno,’ Flirts with Chelsea Handler

We just can’t escape the Bieber fever. The teen sensation took over late night Thursday, appearing on “The Tonight Show” and “Chelsea Lately.” Biebs showed off his rap skills on “Leno,” filling in during Ludacris’ verse while performing “Baby.” He also shared the real story of why he signed with Usher over Justin Timberlake and what he’d be doing if he wasn’t an entertainer.

Earlier in the evening, he flirted with Chelsea Handler, got hit on by some cougars, and revealed what Usher gave him for his 16th birthday.