In this movie a piglike female gets strapped to a operation table and get a tape gag.
http://kimcartoon.me/Cartoon/Monster-Is ... e?id=77097
it start at 1:04:05 but only for a few seconds
at 1:05:04 you get a close up but without the gag but hear her mumbeling.
a few seconds later you can see her again but the gag is small but still there
Monster Island
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