When you fuck a girl and drop a load in her, then she slips between the mattress and wall flopping around.
by @tfresh September 17, 2020

by Vigilante or just V not vigina February 2, 2022

Damn Meg, you should have cleaned up after that gang bang last night, now you’re mermaid tailing it.
by Emily Inez November 24, 2017

by Lego Wonderful May 9, 2023

When a guy has been hanging out with, or simply in the presence of a girl that is just a friend for long enough that she ends up becoming sexually desirable.
Based on the idea of sex-starved sailors who would see manatees frequently and eventually they began to see them as mermaids.
It was also used in the TV show How I Met Your Mother.
Based on the idea of sex-starved sailors who would see manatees frequently and eventually they began to see them as mermaids.
It was also used in the TV show How I Met Your Mother.
Guy 1: "So you're going to be rooming with a chick next year? watch out for the mermaid effect, if you hang out with her long enough, you know you'll end up wanting to hit that."
Guy 2: "Nah man, she isn't hot and totally isn't my type."
Guy 1: "I give it three months."
Guy 2: "Nah man, she isn't hot and totally isn't my type."
Guy 1: "I give it three months."
by acadey April 3, 2011

by Mermaids kiss July 10, 2015

Frankie Mermaid: "What's my name?"
Prostitute: "Frankie Mermaid.."
Frankie Mermaid: "And why is that?"
Prostitute: "Because you are swimming in bitches."
Prostitute: "Frankie Mermaid.."
Frankie Mermaid: "And why is that?"
Prostitute: "Because you are swimming in bitches."
by nobody important :) September 6, 2020
