"Well, alright slave, stroke to the edge and prepare to hold it!. Stroke that denied cock until it just wants to squirt, until those last, few, little strokes and then hold yourself right there slave. Hit the edge very hard!"
"P..p..please mercy, p..p..please mistress"
"Quiet!, i'm in a good mood right now, don't ruin it. Otherwise we'd have to ruin more things other than just my mood, understood?. I have zero problems doing that to you slave.."
"Please no mistress, i'm begging you mistress"
"Well then, don't be such a wimpy thing and stroke to the edge and hold it!. Go on, make it a good one for me. Impress me with your ability to deny yourself for your mistress!"
(You give in and edge yourself and start to ride it)