Bill unless they changed the rules since I last looked this one up anything that is considered something you are wearing and thus falling over the line is considered a part of the body crossing the line.
I just looked it up we are both right:
The foul line is of infinite length including walls, flooring, posts and ball returns. A foul is not committed when foreign objects such as pens, jewelry, coins, cigarettes, etc., drop from a bowler’s pocket or fall from a person’s body or clothing. (Footwear and clothing are considered part of the body.) A player should request permission to cross the foul line to retrieve any items that have fallen beyond the foul line.
Out of the pocket is not a foul but a hat is.
As for the foul light going off. I agree with all of you that you can have the light go off with the ball or the ball hitting a lane. We have all seen that. The issue with that is it normally happens more than one time. This foul was the only one on that pair all night including during practice. I only saw the bowler as the buzzer went off and he was very close to the line from where I sat I could not tell how he triggered it.
Edited on 10/23/2009 7:39 AM