slay a brown dragon 

To take a shit, defecate, poo, empty your bowels.

Can be shortened to 'slay one'

Dude, I need to go slay a brown dragon, I'm about to explode.

Fuck man, I need to slay one.

slay a brown dragon by Skinzzz September 26, 2006

Sound as a brown trout 

1. A state one is in that is extremely good

2. Something is extremely good

1. Aye, am sound as a brown trout sir!

2. Christ, that shot was safe as a brown trout ma man!

Sound as a brown trout by A-Whyte December 6, 2004

Roll a brown 

An all purpose phrase appropriate for any situation. Verb, adjective and occasionally noun - it can be used as a greeting, to acknowledge success or failure. Most commonly used as an expression of delight.

Can be adapted to 'brown rolling', 'rolling brown' or 'brown roller'.

Also has fecal connotations.

Some people imagine a six sided dice being rolled with the outcome landing on the brown-colour side.

I just got top score on COD - roll a brown.

That curry has ruined me.
You should roll a brown.

Roll a brown.
Hello.

Which way is the brown rolling?
Down town.

What have you been up to, mate?
Brown rolling.

Roll a brown by Jimmy the prince December 31, 2009

Laying a brown egg

To inexplicably crap your pants, especially when squatting down to do something.

John was laying a brown egg when doing too many forced squats.

Laying a brown egg by Captaindeadboi May 6, 2021

Releasing a Brown Trout 

Taking a dump into a large body of water(lake, pond, ocean, etc). Believed to be originated in the waters of Lake Erie. Most commonly over the side of a boat.

Doug: Where did Beef go? I need him to start grilling burgers

Dave: He's on port side, Releasing a Brown Trout. I think he had mudd butt.

Releasing a Brown Trout by DatDudeBeef July 16, 2009

Squeeze a brown one out. 

To push, with excessive force, a nice steamy brown trout out of your butthole.

Monkey, can I use your bathroom? I need to squeeze a brown one out.

Squeeze a brown one out. by Monkey Gray November 13, 2007

Wiping a brown marker 

When you're wiping your ass and it never seems to stop.

Last night, I was wiping a brown marker for fifteen minutes.

Wiping a brown marker by Ghettomemester May 26, 2017