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!!!