n. A home-made device, usually crafted out of fabric softener sheets, a spent toilet paper roll and a rubber band. The hippy tube will greatly reduce the average pot-smokers risk of being caught by any type of authority figure. If 8 out of 9 pot-smokers use the Hippy Tube during 90% of all cannibus consumption, scent of burnt reefer will be reduced by up to 3x, where x is number of weeds smoked. Also more commonly referred to as a "hippy stick" in the South.
"Donnie, will you please include the hippy tube when you pass me that blunt? Mom's in the kitchen and she already thinks your stoned off of numerous drugs."