Dinner, Lunch, Supper

I'm sure that not many of you have this particular challenge (though there are probably other things you say that make them wonder), but my children are always correcting me. Calling lunch "dinner" is so ingrained in me from growing up in Southern Alberta, and frankly I'm getting weary of hearing "It's not dinner Mommy; it's lunch." Maybe we should just start calling it dinnerlunch because that's what I end up sputtering out to avoid being corrected. My Canadianism has been pretty stifled after living in the United States of America for about twenty years, though I do still say "sorry" with a long o sound quite often, and produce (the groceries we buy) with a short o. (Produce doesn't make its way into conversation that often mind you.) I just can't get past calling it dinner.