a mermaid tail is a tail of a mermaid, though some people (typically texans) refer to themselves as a mermaid tail or having possession of a mermaid tail. those with a mermaid tail, seem to be slightly or overly phsychotic.
me: did you here about that girl that found out her boyfriend was cheating on her but didn't care?
you: omfg... YES! that girl is such a mermaid tail!
you: omfg... YES! that girl is such a mermaid tail!
by someone who seems crazy August 21, 2016
Damn Meg, you should have cleaned up after that gang bang last night, now you’re mermaid tailing it.
by Emily Inez November 25, 2017
A mermaid tail is a costume (usually made of swimsuit fabric, silicone or rubber) that can either be swimmable or just for show.
A mermaid tail allows you to look and feel like a mermaid by putting your feet into a fin covered by fabric to look just like the magical creature.
A mermaid tail allows you to look and feel like a mermaid by putting your feet into a fin covered by fabric to look just like the magical creature.
by Bubbly Gummy January 10, 2018