Wow - I would never do that (I assume this was without the dojo sensei's permission) especially with newbies and especially if this your first visit?
But to answer the question, no. During the class you were teaching maybe (see my post above about my discomfort with the term) but I think sensei is more than a one off thing.
Jørgen Jakob Friis (JJF) wrote:
Okay - now here's a twist.... I'm a 3 kyu and definately NOT a sensei in my home-dojo. However last year I visited a dojo in another town, but when I got there they had to cancel the practice, since the local sensei was ill. A bunch of very new aikido-students looked very dissapointed, but as they were beginning to leave I offered to teach a class - me being the only one who actually had been graded. They accepted and we had a lot of fun for a couple of hours.
My question (which is actually just for arguments sake) is: Should I be called sensei in that dojo from now on since I did give a lesson that night, or was it only that night that I was a sensei ?
No matter what, I still don't feel a bit like a sensei in my home-dojo