when some one rolls a joint to pass round and puts all the weed at the top so he gets most off it to them self.also known as a rackley
tonys such a top loader putting all the weed at his end
by antonio ranklif January 21, 2010
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To take a hearty shit in the back part of a toilet causing it to constantly refill with dirty water
Andrew released a back loader into Bob's toilet causing mass plumbing problems and a strong and steady stench of shit
by Nolan D. April 25, 2008
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The vile (or pleasant) act of defecating into your mate's mouth and proceeding to force the excrement down his/her throat with your penis. Your mate's mouth acts as the muzzle, the exrement acts as the bullet/gunpowder, and your penis acts as the ramrod. Hopefully your mate will projectile vomit immediately after being muzzle-loaded, so as to replicate the firing of the loaded firearm. If you wish to take it a step further, you can hire a Civil War Commander reenactor to shout out commands during the process such as "Prime!" "Draw Ramrods!" "Ram down the cartridge!" and "Fire!"
Dan: Bro, I hired a Civil War Commander reenactor to shout out the proper commands as I performed the muzzle-loader on your mother last Thursday.

Mike: Did she projectile vomit?

Dan: Hell yeah!

Mike: Nice!
by Mike Dumas May 20, 2008
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Going number 2 in a men's restroom urinal.
Dude 1: Man, i freakin' hate that janitor.
Dude 2: Me too, that's why I dropped a front loader in the men's room that he has to clean.
by klundtasaur July 15, 2009
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Someone who takes advantage of friends by consuming their alcohol, drugs, food, or anything desirable without contributing anything.

A person who uses up all your drugs and alcohol and then leaves.
After I passed out, John smoked all the goods left in the jar!

Response:
Yeah, he is a free loader, get used to it.
by venusdmoola October 18, 2010
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Ok once you are fucking a girl from behind stop, pull out, pop a copenhegen out of your mouth, place it on the rim of her ass and........load the muzzle!
The girl was ready and willing so, I gave her the muzzle loader.
by scott ak October 10, 2006
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