Usher on showing tough love to Justin Bieber: 'I'll punch him in the f---ing chest when I need to'

Usher is not afraid of showing Justin Bieber some tough love. The R&B star is very aware that the “Baby” singer has not been on his best behavior over the past few years, telling Billboard, “I’m not happy with all the choices my friend has made.” http://ift.tt/12Xr74u