Oh and all the recent talk about "zhut zhut" ..... before you go charging onto this, do consult the experts about it. Yes, I'm referring to the girls themselves.
I have
And the verdict from the majority is this - please don't do it!. Especially with force. Nipples have lots of nerve endings. They are delicate and sensitive things. Aggressive manhandling like sucking hard and that "radio tuning" nonsense really doesn't give most of them any pleasure. Only discomfort.
Sure, there are some who like the rough stuff. But many more prefer more gentle, sensual, purposeful caressing with the lips, tongue and hands. I guess if this is supplemented with some zhut zhut, it'll be fine. But don't only be a Dyson.