Nickelodeon's green goo (5)
I believe the answer is:
slime
(Other definitions for slime that I've seen before include "Goo" , "Slippery mud; slug trail" , "Gunge" , "Sludge, gloop" , "Gunk" .)
I believe the answer is:
slime
(Other definitions for slime that I've seen before include "Goo" , "Slippery mud; slug trail" , "Gunge" , "Sludge, gloop" , "Gunk" .)