While enjoying a classic rock cover band the other night, I was amazed to see the bass player bend his notes by flexing the neck of his bass (a Warwick Corvette)! I've seen this done before -- my ex-guitarist used to do it all the time to bend his notes. We used to cover our eyes and turn away (so we wouldn't take any shrapnel in the face). This can't be good for the neck and/or body joint, can it? Has anyone else ever seen this done?