The thick angled tube shoots up into their assholes, surprising them all rudely. The panels that hold them up, rotate and lower from the ceiling. Sharp yells of pain and surprise echo around the room. The suction pulls a little crap from their bodies, before a sharp holecutter spins up and enters the spread open sphincter, slicing it out of their bodies. Their intestines spool from their bleeding rectums and spiral down the tube, splatting wetly in the capture bottle below.