Alabama Dirt Whistle 

Some one takes a dump in your mouth and you spit it back into theirs.

Though she wasnt musically inclined,she sure could play a mean Alabama Dirt Whistle.

Alabama Dirt Whistle by Scott,Jacob& Sarah June 22, 2006

Wet my whistle 

To consume a beverage of some sort.
Technically it should only be used in reference to drinking beer because of the history of the phrase:
Back in the middle ages when beer was sold in ceramic cups they would be fitted with a small whistle which could be blown upon finishing ones beverage in order to alert the bar staff that you require another beer. Therefore to get a beer would literally be "wetting ones whistle"

Martin - oh look, I finished my lovely pint of ale. Best wet my whistle with another Broadside or London Pride.
Alexi - Get me some chillie nuts or prawn cocktail crisps while your there, you slag.

Wet my whistle by MBAP88 November 1, 2008

Crip Whistle 

The whistle that all blood members never wanna here because they are about to get their asses fucked up and shot

This nigga doin a crip whistle let's call the homies bluh

Crip Whistle by ksmith123 January 24, 2020

cheese whistle 

A basketball shot where a player bounces the ball to himself, and then catches and scores a basket in a single fluid airborne motion.

Hey Max, watch me beat you with the Cheese Whistle!

cheese whistle by Steve Kerr April 11, 2007

Shit Whistle 

A type of small, handheld flute made of dried and aged fecal matter.

"What do you mean he doesn't want to hang out with us?! Tell him he can go suck a Shit Whistle!"

Shit Whistle by Wrex, from The Normandy Crew March 4, 2013

Stink whistle 

The butt hole

After a romantic dinner and some heavy petting to set the mood, I got down to business and tongue punched her in the Stink whistle

Stink whistle by themellonchef February 7, 2018

California Rape Whistle

The sound made by air passing over a recently stretched anal cavity. Much like the sound of wind over the mouth of a beer bottle, but with more shame.

Tom: What was that noise?

Kevin: Tyler just walked by. He had his head down, so I think he got a new California Rape Whistle.

Tom: Oh. Makes sense.

California Rape Whistle by Kevy Metall March 5, 2012