San Francisco Giants’ Matt Cain grabs Hunter Pence’s butt during picture (Photo)

This past week the San Francisco Giants held their annual fan fest – one of the most popular in all Major League Baseball.

Players sign autographs, meet with fans, pose for pictures and just enjoy themselves off the field for a few hours.

Clearly, starting pitcher Matt Cain was enjoying himself a little too much when he posed for a photo alongside teammate Hunter Pence.

Standing on stage for a photo-op, Cain subtly slid his arm down the back of Pence where he grabbed a handful of his butt as the picture was being taken, likely providing a pretty good reaction from Pence in the photo who was understandably not expecting the gooseing.

Both Cain and Pence are known for their somewhat dry sense of humor, so I’m guessing this isn’t the last we’ll see of these two going back and forth with each other this season. Cain might want to watch his back.

Pence, who was a free agent this past offseason, re-signed with the Giants for $90 million over the course of five years.