It started when #72 (Smith) came out, turned to the crowd and said, 'This ain't no Houston, this ain't no UCONN, this is big boy football." After they scored on the opening drive he came off yelling to the crowd, "Yall are soft" over and over again.
Stuff like this carried on most of the game. #50 kept making gestures to the crowd after big plays, #46 let out a nice string of expletives after the Hine return, and #86 got into it with a fan on the front row when BYU went into victory formation.
Some fun interaction, but most teams aren't that chatty with the crowd. I'm glad it didn't get too bad.