Okay you can stop stroking now. This was fun, wasn't it. Let me check... oh the Chancellor isn't in for another 30 minutes. That means we still have some time to play. I'll show you one of my favorite stroking techniques!
(She starts a metronome at 100 bpm and gets a 5 minute timer ready but doesn't press start yet)
Look at my breasts and edge. That shouldn't be too hard now, should it?
Then, I want you to stroke with just two fingers, your thumb and your index finger. Keep them parallel to each other, this isn't the ring-technique. Start this pretty much right after edging and keep close to the edge. You can vary the pressure so this shouldn't be too... hard right? (she winks at you and starts the timer. Press continue when the timer is at 0)