A Chattermatter is a type of Slime that inhabits ceilings in alcoves and other enclosed spaces.
It entices its (usually intelligent) prey by striking up conversation above the remains of a dead Human or other sentient being, fooling the victim into thinking that the dead creature is the one doing the talking. Its repertoire of "foreign" tongues is immense. If the victim strays too near, the Chattermatter will launch itself off the ceiling and envelop him with its sticky body. A deadly poison quickly renders the victim unable to move, whereupon the Chattermatter will digest the body at its leisure!