When I started in bikes around 1972, they were called cagers.
If I go to a swapmeet in the winter I tell people i will be arriving by cage..
Its called vernacular.. in a trade I used work in we had what was known as a Schoolmarm, and everbody working those areas knew what it meant. This is the first time I think anyone mentioned being offended buy Cager...... Most people understood the inference that you were enclosed by most cars, and on bikes you were not.
If the biker vernacular bothers you so , maybe you dont fit in... or ever will..
Now Shoolmarm, twas not that politically correct... does anyone on here know what it means ?