I davened in a couple of different Chassidish shuls over the past few days, and in two different places (Tenka and Munkacs), I noticed that nearly all men who were called up for an aliya were addressed as what sounded like "moreinu" (or, in context "muraynee") and possibly even "moreinu harav," if I heard right. This included people who were definitely not the Rabbi of that shul.
Is it likely that I heard right?
If so, what is the meaning and basis of this practice? Why call everyone "our teacher"?