Glossy Taco: a clear coat of nail polish top coat designed to give nails a glossy finish. It is popularized by YouTube personality Cristine from the channel SimplyNailogical. She refers to all polish top coats as "tacos." She made a videos applying 100 layers of "glossy tacos" and ruined YouTube.
See: glossy top coat
"Cristine from SimplyNailogical uses a glossy taco to make her holographic designs show better on her nails."
"....glossy taco? Wut?"
"It is a slang term for glossy top coat. I can't say it properly anymore."
Known as glossy top coat. When a clear like liquid also known as nail polish is placed on top of a nail design. Simplynailogical also known as Cristine made this up while covering the holo polish with a glossy taco (top coat)
"Now it's time to add a glossy taco"
"Cristine saw that Jen was using matte top coat, and snatched it and gave Jen the holy glossy taco"