Because a Noob Tube is an impact triggered explosive, not a timed one. Plus, it can be fired across maps. Noob Tubes essentially can turn you into a portable mortar strike.ethaninja said:What would be the difference between using that and a grenade?Eggsnham said:Noob Tubing is using an under barrel grenade launcher on an assault rifle in an FPS game. It usually results in a one hit kill for a splash radius of about 10-15 feet and damages for another 5-10 out of the kill circle. Some would say they're the cheapest and most game breaking thing in FPS games, others would say the complete opposite.ethaninja said:I honestly have no idea what Noob Tubing is. Please elaborate.