[quote=souldistortion]what is a lung? i though that was just the UK name for a gravity bong. or a bucket as they call it.

5 hits for me. but then again right now im only smoking out of my 1 footer[/QUO

Imagine a plastic bottle with the bottom cut off and a food bag stuck round the inside with tape. Make a bowl as you would for a "gravity bong" and load it up. The idea is you stuff the bag inside the bottle and slowly pull it out while torching your herb. When the bottle and bag fill with smoke simply toke hard through the top of the bottle for a super fast hit.
And just to clarify we UK folk do call a grav' a bucket bong.