As a 'Lee, I can't remember er anyone begging for more (unless I was disinclined to tickle them in the start, as I wasn't in the mood or thought I'd have enough time). A part I particularly enjoy is "making" my volunteers ask, beg for me to tickle one of their more ticklish areas. The spot generally drives them insane, but being forced into such submission that they have to beg me to tickle that worst part, is such joy. Not only is it usually as hard as pulling teeth, but shows a real break on their part, begging for what they can't stand.
When my brain goes away, it can flip-flop. In either position, I like to be in control, so telling 'them' where to go, and more, as long as I feel in control, it's generally better. But usually I flip the situation before something so ludicrous happens and show 'them' who's the boss. :lol