borborygmi please!
borborygmus (n.)
also borborygmi, “rumbling noise in the bowels,” 17c., from Latin borborigmus, from Greek borborygmos, from borboryzein “to have a rumbling in the bowels,” imitative.
i recall being amazed at the effort put into the sound effects of the alien egg opening from Alien; then i realized one quiet evening that just about any kitchen/vegetable prep kinda sounds like that (eww)