My T has teased me a bit, but it's in a very gentle manner, never insulting, and she makes it very clear that it's not meant to be hurtful. In that case, I don't mind. It helps to build the relationship and makes me feel closer to my T.

In general, my experience with teasing has been hurtful teasing or bullying...my T is aware of this, and so is careful in how she teases me. I don't usually respond well to teasing because of my history, but I can tolerate a little bit of it, from people I trust.