London Fog Horn

During fellatio the recipiant jabs the donor's chest directly between the lungs. The donor then reacts by expelling a prolonged deep tone, comparable to that of a fog horn.

Last night my boyfriend gave me a London Fog Horn. It woke my grandmother up.

by Garyland May 29, 2008

FOG HORN

FOG HORN is when you are doing your woman in the ass and she farts and it sounds like a fog horn

dude1: my girl put out such a stanky nasty fog horn last night
dude2: ohhhh thats sooo grosss

by alex/brandons words December 8, 2010

Fog Horn

A sexual act in which air is blown over the top of a dilated anus, in order to produce a humming sound via the Helmholtz resonance.

“She and I tried fog horning last night”

by TimberShiverer May 1, 2025

Fog Horn

A derogatory term used to describe a loud British person.

*British person being loud*
Non-British person: "Shut the fuck up Fog Horn!"

by He8i3 May 4, 2022