A sub-genre of pornography, presumably of Japanese origin, dealing with the liberal usage of substances holding particularly glutinous properties. While this can sometimes refer to large amounts of oil, lubrication gel or (apparently) petroleum jelly, the main substance in question is methylcellulose, used in vast, VAST quantities.
1. (noun) any highly gelatinous/glutinous, substance with a largely clear (transparent) composition used in the context of sexual activity.
2. (tr. verb) to expose to, affect by or submerge in ecto.
"Dude, you've put too much product in your hair. You look like a walking lump of ecto."
"I haven't had sex for a month...I would love to ecto your little sis' right now."