Here's a few I thought of:
You might be an RVer if,
you've ever sneezed in the middle of the night and your neighbor said,"God Bless You".
you've ever had a beer for breakfast.
roughing it is only having water & electric.
getting back to nature is squeezing into a 500 site Camp Ground with 18" of clearance on your awning side.
you refer to Camping World as the "Male Mall".
your Woodalls/Trailer Life Directory is bathroom reading material.
you have a campfire and the temperature outside is 85 degrees.
your favorite desert is Smores.
you have more than one Road Atlas.
you bring your own firewood to a campground.
you keep fishing worms in your RV refrig.
you refer to your spouse as the co-pilot.
you know why you don't use the words "whoa" and "go" when backing up.