These Illini, Why Must They Fight?

8:00 am I awake. Weber grill has mysteriously appeared in my room overnight.
8:30 am Housemates awake. Possibly because every stereo in the house starts playing various Carolina fight songs simultaneously.
11:00 am I return from lab. Contents of the refrigerator have been replaced with Orange Crush.
12:00 pm The only cups remaining in the house are plastic UNC ones.
1:00 pm A giant First in the Nation Bicentennial banner mysteriously appears on the side of the house.
1:30 pm My car magically sprouts Illinois window flags.
3:30 pm The housemates' cars bloom with Tar Heel car magnets.
6:00 pm All is quiet. Too quiet...

Confused? All is explained here.