Earwigging

Several related Mississippi legal rules prohibit “earwigging.” Without looking it up, can you tell what it means?

Note that no other states even mention “earwig” or its forms in their statutes, even though there’s nothing Mississippi-specific about that behavior. Also, only six cases accessible in Westlaw mention the term (setting aside those mentioning either insects or people with that name), all from Mississippi.

Thanks to Bill Raftery (Gavel to Gavel) for the pointer.