just wondering, cause sometimes, when extremely hard, a push down will result in a popping sound, much like cracking a knuckle.
not always, and not repeatable enough for a party trick, but have been able to do it far as long as I can remember...20 years+
anybody else? or any explanation?
not always, and not repeatable enough for a party trick, but have been able to do it far as long as I can remember...20 years+
anybody else? or any explanation?