Happens more than you think.
I had a pilot at the end of tree-planting season, giving all the tree-planters a ride of their life, high G turns, negative G pushovers, steep banks, nap of the earth stuff....funny thing when he was in view of camp, he flew like a fricken angel. Cant let the wrench see what he was doing you know.
guess he didn't realize sound travels and i could hear every twist, turn and bank from miles away.
bottom line, many pilots fall prey to giving the passengers a ride to remember...if they survive.