If you comb your hair all slicked back for three days, 1950's style, becaused you hit your head on the greesy hitch pin.
You know everyone in the campground that has a tounge pull trailer from the greese on their cloths and hands.
You use the skylight to view the stars rather than going outside.
Since your kids are grown you now carry 50 dog toys, 50 pounds of dog food and 10 pounds of treats. His bed is bigger and better than the one you and DW had for the first 10 years you were married.
You know you forgot to wash your hair when the bathroon vent sucks your hair into it.