You asked what "topping form the bottom' is and does it really happen. As in all relationship the type of control is not always as it appears. When a sub pushes or guilds the Dom into how control is exercised they steal a bit of the control from the Dom. Alll limits seeting an negotiation should be done in advance of the beginning of a session or 'scence'. If a sub tries manupating or controlling once it begins then they are going outside the agreed roles and rules set.

Examples: A Dom hurrying through complex rope work they pride themselves in and enjoy. They are doing to get to the next item that plannned because the Dom artist rope work does not interest the sub. They know the 'sub really likes' they next part of the scence more. Haing been told many times just before the scence started or obvious from the subs 'Im bored so hurry up' expession. Now the Dom is not in control and are instead being topped.

If a sub uses a whinny bratty attitude to push a Dom into what , when or how to do something its manipulation. Real negotation is when both agree in advance what is to be done or not done. Manipluation is not allowing the agreed control and altering the roles of the two involved.

So if you feel your sub is pushing and manipulation the scence you need to stop and take control. tell them point blank to behave and let you continue with what you both agreed to. otherwise you need to stop the session and have a long serios talk about whats really happening.