A euphemism for defecating inspired by the Loch Ness Monster. Similar to "dropping off the kids at the pool", yet with a Scottish flair.
Scotsman 1: Good gracious I had a lot to eat last night!
I've got to drop a nessie in the loch!
Scotsman 2: Sounds like a plan, laddie.
I've got to drop a nessie in the loch!
Scotsman 2: Sounds like a plan, laddie.
by Kamikaze Kool-Aid Man October 1, 2010
Get the Drop a Nessie in the Lochmug.