Generally, this type of smoking apparatus is used by smokers who, for one reason or another (generally, youth or noobishness) does not posess skills in rolling joints or another smoking method (ie: pipe, bong)
This is also known as a lung
Other 14 year olds: "No..."
14 Year old: "Ok, let's smoke some out of my chute, watch out for the tin foil, it hurts your lungs after a while"
Other 14 year olds: "Oh boy!"