Story highlights Peter Farrelly dropped a Twitter-imploding bombshell in the middle of a "Three Stooges"

"We're getting set to shoot Dumb and Dumber 2 in September," the director said

Sean Anders and John Morris were hard at work on a script

Peter and Bobby Farrelly have been quietly developing a sequel to "Dumb and Dumber" for awhile now.

Back in October , we heard that Sean Anders and John Morris -- the comedy screenwriting duo behind "Hot Tub Time Machine" and "Mr. Popper's Penguins" -- were hard at work on a script. That was the last bit of news about the project...at least until this weekend, when Peter Farrelly dropped a Twitter-imploding bombshell in the middle of a "Three Stooges" press junket.

"We're getting set to shoot Dumb and Dumber 2 in September," the director told ComingSoon.net. "We've got Jim Carrey and Jeff Daniels back."