Yep, spent a lot of time in the bed of a 1960 Ford F-100. In fact I still drove that old truck when I was in high school during the 80's. Straight 6 motor, huge steering wheel for leverage because you were the power steering, no seat belts & the only part of the interior that wasn't steel was the bench seat. Gosh bless me Friar I still miss that old beast.
We also swam in icky streams & ponds.
Sometimes we would put fire-crackers in old apples & tomatoes then throw them at each other like grenades too.
We even played on swings & monkey-bars with nothing but dirt, gravel, or pavement under them.
According to the PC Nannies of today we should all be crippled, maimed, or dead.