Have you ever spanked a person taller than yourself, or have you been spanked by a person shorter than yourself? If yes, by how many inches? Did you think it's strange if the slave is taller than the master, or just normal?

Yes.

There is no Slave/Master thing.

My lady and I spank each other, she's about a foot shorter than I am and we practice a form of Mutual Domestic Discipline.

We are accountable to each other, if I should do something wrong she is more than capable of giving me a VERY sore tender bottom. Never underestimate the power of a woman holding a hairbrush, or worse a bathbrush.