John Stamos Calls Himself 'Uncle Jonas' as He Poses with Jonas Brothers amid Ongoing Prank War

John Stamos is fully embracing his role as a bonus Jonas.
The Fuller House star has been involved in a hilarious prank war with Nick Jonas for months now, but it seems the two have finally set aside their differences – and Stamos appears to have joined the family!
Stamos, 55, posed with Joe, 29, Nick, and Kevin at the Wango Tango concert Saturday in a Jonas Brothers T-shirt, calling himself as “Uncle Jonas.”
In the photo, he stands between Kevin, 31, and Nick, 26, with a finger