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."