Jimmy Fallon, Joseph Gordon-Levitt sing Rihanna's 'Bitch Better Have My Money' barbershop-style

NEW YORK, Sept. 27 (UPI) -- Jimmy Fallon and Joseph Gordon-Levitt, along with the Ragtime Gals barbershop singers, performed a hilariously cheerful rendition of Rihanna's "Bitch Better Have My Money."

The Tonight Show Starring Jimmy Fallon clip has gotten more than 1.8 million views since it was posted on YouTube Thursday.

Rihanna's hit song is about a woman threatening to do bodily harm to the people who owe her money, then act like they forgot about it.

Gordon-Levitt is on the promotion trail for his new film The Walk.