But "Go Birds" is more than just a phrase, it has multiple meanings.
"It means hello, welcome here. We're Philly," said Dave Duffy, who is from Cherry Hill, New Jersey.
"It's like jawn," said Ray Poserina, who is from Northeast Philadelphia. "I was trying to tell someone that, 'Go Birds!' is like saying, 'Oh, I'm going to get that jawn over there.'"
If you don't get it, you don't get it.
And, of course, Go Birds!