Thanks HD...once again I've read something and completely missed an important detail. :bang:
I think the reason that detail did not register is I was subconsciously asking the same question as Bond - how would hair still be on the skull, and how would duct tape stick to the skull.
As penance for missing the detail and needing HD to call me out, I duct-taped my mouth.
Observations:
I could not get it to stick to my wet teeth very well, and it did not stay on very long when my teeth were dry. Also, I needed a really big smile with teeth closed and applied very tight to get any traction. Lip and tongue movement got the tape off the teeth pretty easily.
Could gravity have assisted in keeping the tape in the skull? If the skull was undisturbed as the tissue between it and the skull decomposed, would the tape adhesive continuously reattach to whatever was left above it? That is, the part of the tape attached to the skull was underneath the skull. Example, tape on back of head resting on ground is where it is attached, and still covers mouth area but not strictly attached. :waitasec: