How did I get signed up for a 50-mile Relay Race?

What I want to know is how I got myself talked into this?  I love my sister and all but...  Well, I decided that since I was weak for a moment and got talked into this that I'd better start training in order to not be the slowest person on the team.  Yesterday I went for a 6 mile run that took me just under 1 hour.  I haven't run like that in a long time, and I am pretty stoked with how well I did.  However, I am sure paying for it today.  I am so sore that I think my sore is sore!  I am hoping that I can not only finish my portion of the relay with a good time, but that I can also get in shape while I am training!  Here is to a little butt!