Earlier this summer along Interstate 35 in southern Oklahoma, billboards advertising cannabis businesses upended a road trip game for one traveling Texas family, when Mom and Dad had to explain to their inquisitive kids what the signs were about.

A pit stop at a Marietta gas station didn’t provide relief. There, the parents had to explain the green, blue and black bongs, each made in the shape of a middle finger and for sale on a shelf.

“We were driving up, taking our kids to camp to stay for a week,” said Paul Chabot, whose five children range in age from 6 to 12. “As soon as we crossed the Texas border we began to see a number of billboards popping up. We play games with our kids, reading the billboards. We couldn't play that game anymore. I was really disappointed.

"My wife and I took our kids to Broken Bow last year and we don't remember seeing signs like that. It just exploded. It seems like they were popping up every couple miles.”