hashing is a hare-n-hounds type deal where someone marks a trail through woods, streams, shopping malls, underneath freeways, open road, railroad track, etc. usually by throwing little daubs of flour on the ground or side of trees or buildings for the others to follow. No one except the person who set the hash knows where it goes. The trail intermittently ends at checkpoints where the others have to fan out and search for where it resumes, often with false trails and backtracks. At the end there are drinks and munchies and ribald rugby-type songs. Newbies have to drink a full beer from a wooden mug without stopping. If they stop mid-drink they have to pour the remainder over their head. After their fifth hash they get named by mob-consensus and the dirtier more profane the name the better. A dermatologist I know was named Crotch-Rot. My name was Yuppie Scum. My girlfirend's was Comes with Scum. you get the picture. Its all over the world and in every state.