Answer: sliming

AnswerCrossword Clue
SLIMING.Ghostbusters. activity
SLIMINGCovering with goo, la kids' shows
SLIMING"Ghostbusters" experience
SLIMINGHurling goo at
SLIMING"Ghostbusters" activity
SLIMINGActivity in "Ghostbusters"
slimingSLIME, to cover with viscous mud
slimingCover with slime