I've had one for a couple of years now. keep breaking them then getting replacement parts for free from the manufactures in Ireland. Absolutely brilliant fun, and yes, my wanking arm is HUGE!
EDIT
They are also great fun when pissed and you let the spinning gyro inside rub against your skin. Hurts like hell when you are sober. Looks just like a burn.
(, Thu 5 Mar 2009, 17:24, Reply)
and I won't ask what bit you were rubbing it against ;)
(, Thu 5 Mar 2009, 17:32, Reply)