Ali took a few clean right hands from Foster and did the old wobbly legs. Its a show of deffiance. Like a ridulous loud laugh when someone tells a genuinly funny joke about you. It does hurt or get their attention and a spur of the moment reaction is to try and mock the punch but like a joke the best reaction is to just not laugh. If you get caught give no reaction, rather than acknowledge a good shot and play for a few seconds to clear your head.

Either that or invite free shots like Mayorga