Occasionally,you can combine both.Years ago,a friend had a Suzi 380 triple.One day,he gave a lift to a very large chested young lady to Neath.When he pulled over in Neath,he asked her what she thought of the bike.She replied enthusiastically that she had enjoyed the ride-the vibration was turning her on.She didn't see any more of Neath.My friend turned the bike round and thrashed it all the way home.Last summer,I gave a lift to a very appealing lady on my XBR.When I asked what she thought of it,she said it was horrible-too much vibration through the footrests.Damn!How do I make the seat vibrate??