Bubbly slippery stuff (4)
I believe the answer is:
foam
(Other definitions for foam that I've seen before include "Suds" , "Sea froth" , "Boiling bubbles" , "Froth or spume" , "Mass of small bubbles" .)
I believe the answer is:
foam
(Other definitions for foam that I've seen before include "Suds" , "Sea froth" , "Boiling bubbles" , "Froth or spume" , "Mass of small bubbles" .)