The first game against Georgia Southern in 2006 comes to mind. Flying to Atlanta with my dad, we drove over to Statesboro on game day. Seeing their tailgating setup impressed us right away. We figured this is how I-AA football is going to be. It was a first class operation with very welcoming fans. They even introduced us Northerners to boiled peanuts!
I'm pretty certain the Eagle fanbase was not prepared for what was about to happen to their team on the field. They were quite boisterous at the outset, chanting "Who's house? Our house!" Our contingent wasn't very large that day, but by midway through the 2nd quarter, we had a lot more to cheer about than they did.
Though the final score escapes me, we pounded them pretty convincingly. By the 4th quarter, our crowd turned the tables on the GSU fans by chanting the "Who's house? Our house!" back at what remained of their thinning crowd.
Hanging with WyoBisonman, we enjoyed a few cold ones at a local bar. Most of the Georgians were complimentary of our team, but one vehicle had some hillbillies who felt it necessary to tell us to fuck off and go home!
We did go home, but like the Bison team, we brought back with us a lot of good memories and more importantly, a belief that our program would be just fine competing at this higher level.