I guess the last time anything really happened between my sister and I was when she was about 17 and I 14, or thereabouts, and she was reaaaaaally into drinking at the time, and it was like 5 in the afternoon when we were camping, and she just kept going back to get more out of the cooler, and at one point I was just trying to keep her from getting to it, jokingly, and she was like twisting my arm and screaming at me ;o

Fortunately she's given it up, and even when she was at a bachelorette party on her 21st birthday she was really responsible.

That's all I can think of. My sister and I have never been the type to fight. We've been kind of distanced for a while now so it doesn't afford us much opportunity to.