Adjective - The action of one who packs a cone excessively, ignoring the request of a lightweight to get them completely fucked out of their mind.
In order to pull a Sneaky Nella successfully, the cone packer must continuously deny any action of this.
Ohh fuck you packed that cone so much you're such a sneaky Nella!
Anal sex with a female who has diarrhea. The sloppy kind. You take an egg forming stencil for the McDonalds egg mcmuffin and let it drip from the tip of the old yogurt cannon. Once it solidifies, you punch the girl in the face "hockey style", and slip the sludge puck back up the processed food removal orafice.
Man, that chick tried to stop the old sneaky sludge puck maneuver last night.
To slip cock and both balls up a male partners anus
Andy have quentin a sneaky Leese last night on the night club bog
A person who is addicted to ducks and then starts acting like one then only to realize they got a whole yard of pet ducks.
Look at sneaky guy over there at the duck farm!
To attack or injure (often as a result of friendly play) someone who is unprepared for an assault.
"Oh my god did you see that guy get sneaky-rocked by that foul ball?"
"My roommate used my deodorant again so I sneaky-rocked him in the head when he got home from work."