Really ??????????? If you can't work out it should be "Just Trains" you need to visit your doctor. Maybe he can prescribe a cure for your Pedantic attitude. You may also wish to revisit most of your own posts which display a multitude of similar spelling failings.
If a joke, I would have expected a fun, smiley, laugh emoji or a "just joking comment". I know him of old, and his sarcasm and turn of phrase can be very intimidating and off putting to newcomers to this forum. It has been noted on numerous occasions.