The act of shoving a corn husk up ones booty/corn hole. Similar to pegging (ew), but with corn on the cob. Chocolate covered popcorn is the ideal outcome.
verb:
1. the act of taking a massive shit and jacking off at the same time, not necessarily while the shit is still coming out
2. to build a grand shack
3. to get smacked in the bathroom
1. I was shacking and shacked all over the stall door!
2. I'm shacking right now, can you get me some more wood?
3. Angelo was shacking yesterday, the wanker.