in the hills about 10 miles outside of Portland. I was 18ish. Hopped the fence with some friends.
One friends younger brother descended first. On a dare I leaned out and let a turd drop. I was at the top. He was almost down.
His brother claims he heard it break the sound barrier as it passed within 18" of his body. Terminal velocity rules don't apply as it was fueled by Taco Bell 2 hours earlier.
It was all fun and games the wind drifted it back into the tower cross members about 20' from the bottom. No one enjoyed dancing around that shrapnel. It looked like a poopoo IED went off.
As a late 30's professional I'm glad CB is anonymous so I can share these stories in a safe space.