Kensington Mouthwash 

The Curb Stomp maneuver made famous by the film American History X has it's origins in the city of Philadelphia. Known as the "Kensington Mouthwash" it has become the favorite means of dispatching ones foe in the predominantly ghetto neighborhood of Kensington. The Kenzo maneuver has been adopted by the city as a whole, mostly as a joke which shows you what kind of people they really are.

The Kensington Mouthwash requires you to somehow get your opponent onto the ground. Then you force them to open their mouth and bite down on the curb. From there, you apply the proper amount of force onto the back of their head in order to kill the person, preferably with a swift an decisive stomp or kick.

Timmy, get your fucking hands off my cheesesteak or I'm going to take you outside and give you a Kensington Mouthwash.

Kensington Mouthwash by PaperStSoapCo March 17, 2009

Mexican Mouthwash

An entire bottle of hot sauce (no, not Tabasco the hot sauce that actually tastes good I'm talking the Mexican shit that no one likes) mixed in the mouth with sperm from a Mexican (also includes island Mexicans i.e. Cubans, Puerto Ricans, and Dominicans.)

Carlos: Ehh Ese you hear? Jesus gave Elena some Mexican Mouthwash last night! (Make sure to say this example here like a Mexican...)

Mexican Mouthwash by RaceDoesMatter June 19, 2012

Jordan Mouthwash 

The act of drinking a woman's used bath water.

Except for the scabs on her elbows, she would make some amazing Jordan Mouthwash

Jordan Mouthwash by JTNP August 24, 2008

Beijing Mouthwash 

To follow a "gumming" of mephodrone by a healthy swig of juice, whilst swirling abruptly and subsequently swallowing, resulting in an enhanced state of euphoria or "highness"

"Gumming hurts man!"
"d00d what you need is a Beijing Mouthwash!"

Beijing Mouthwash by DrugFiend March 21, 2010

Spermicidal Mouthwash 

Mouthwash specially medicated to kill 99.9% of all sperm after a blowjob.

Try New Listerine Spermicidal Mouthwash in Leafy Mint and new Mandarin Orange flavors.

Spermicidal Mouthwash by Red33mer January 20, 2013

Guinness Mouthwash 

Defecating a thick black sticky turd into someones mouth after a night on the Guinness, before ejaculating on top of it to give the perfect creamy head

Diane couldn't wait for Steve to come back from the pub and give her a hot Guinness mouthwash

Guinness Mouthwash by Peas & Carrots June 1, 2018

Quincy mouthwash 

Dr. Mcgillicuddly mentholmint liqueur since 1865.

i just got a sleeve of Quincy mouthwash who wants one?

Quincy mouthwash by Kron38 September 29, 2019