Of course not, every therapist will have "Firsts" along the way. There is no possible way every therapist has heard every possible thing as all clients/t's are not the same.

My T for example is only going on year 6 of being a T.... and most of those time's it has been with special needs clients, so there is alot of new stuff along the way, I've brought some of it myself, in fact we are currently "Stumped" with how to help me with something but both trying to figure out a good way to do so.