Grass Whistle 

An offensive manuever done by bending over and placing your head between your legs. Then take your middle finger and put it right in front of your ass, and fart. Your finger will resemble a blade of grass as it blows through the wind.

He really must have been pissed, because he totally gave that guy the grass whistle.

Grass Whistle by th3_duk3 September 8, 2009

Minnesota train whistle 

During a gay rimjob, the receiver farts into the licker’s mouth.

Dale proudly announced “Choo Choo!” after he gave Peter a good ole’ Minnesota train whistle.

Minnesota train whistle by Whistleboy July 26, 2018

Wet my whistle 

To consume a beverage of some sort to cleanse one's pallet.
water is a common choice or crunk juice.

Pronounced {whet-mi-wiss-el}

Brad: Oh boy, am I thirsty! I need something to Wet my whistle!

Carson: Want some water?

Brad: I sure do!

Wet my whistle by Cselby January 30, 2007

rape whistle 

Something a rapist blows when they spot their next victim.

I blew my rape whistle as soon as I spotted her, but I was across the parking lot so she had time to get away.

rape whistle by kendopt4 July 28, 2011

Bint-whistle 

A musical instrument that can only be heard by ''old bints'', used as a derogitory term for someone who you don't want to listen to.

Shut ya mouth you bint-whistle

Bint-whistle by sode123 January 31, 2007

ass whistle 

Someone who is loud, obnoxious and very much not liked.
Rooted in the horrible sounds and smells of a colonoscopy prep which are both loud and obnoxious.

Why did David act so rude and obnoxious when Julie came over? What is his problem?
Don't pay any attention to him. He's a total ass whistle.

ass whistle by Sewbrmom February 6, 2013

Vegan meat whistle 

When a person makes another person suck on a dildo...the "meat free" alternative to sucking on a mans penis.

Whoa! dude my gf gave me the best vegan meat whistle ever last night YUM!

Vegan meat whistle by noname12395 May 2, 2011