My Bike & Insurance Question

[Krabill]

I had a friend who was going to let me borrow one of his extra bikes that he had no insurance on (fly and ride type of thing), so I called my insurance agent to see if I could take out a policy on it. His answer was that the insurance I had on my bike covered me on his bike even if he didn't have a policy on it. Not sure how that would work if you don't already have a bike policy.