A tankless toilet (usually made from stainless steel but not always) that has an exceptionally powerful flush; such toilets are known to devour things like
paper towels, socks, full rolls of rollios -- items which would clog up an ordinary shitbowl.
Suicide-resistant prison combys (they are made of
metal and have a lavatory on top & a seatless toilet below; almost exclusively found in
jail & prison cells) are thought to have been the originator for the phrase, "aluminum thunderflush".
Hey John!
Want to see something kewl?
Come over here and look at this...{places the end of a roll of bungwipe into the toilet
water, flushes}. Check out how
fast this aluminum thunderflush devours a whole roll of TP!!! See, it ate the whole roll with just
two flushes!!!