NOONAN!!!!!
"Caddyshack" star Michael O'Keefe is back on the bag ... the actor who famously played Danny Noonan in the iconic 1980 golf flick is a real life caddie at the U.S. Open this week!!!
For real!!!!!
Here's the deal ... O'Keefe used to work at Winged Foot Golf Course in N.Y. back in the 1970s before his acting career took off -- and with the PGA Tour's U.S. Open scheduled to play there this year, Michael had an idea.
O'Keefe told the New York Post he wanted to reprise his role as Noonan and hop on a pro's bag .