trucker bomb
n.— «Road crews call the bottles “trucker bombs”—trucker since that’s the group most often blamed for dumping them and bomb because they explode when a mower hits them, often sending a putrid shower of warm urine into the air and onto whoever is cutting the grass.» —“Truckers don’t stop to go, litter watchers say” by Amanda Garrett Plain Dealer (Cleveland, Ohio) June 12, 2005. (source: Double-Tongued Dictionary)