Basically, it's based off of the new game Scrabble Slam.
Click here:
http://www.youtube.com/watch?v=1s5IkApVut0&feature=relatedAfter watching that, you should know what to do. Replace any one letter with a new one to keep it as a grammatically correct word. No adding, or deleting letters, and only one letter per turn.
Begin!
Ignore List:
battlebrain (Reason: Sandwiching multiple times)
NEW RULE: NO SANDWICHING:
Example: Crap, Crop, Crap
FORT