Something Christine from simply nailogical says that people don't always get but it actually means "gel top coat," typically used as a finish on your nails.
After you put the holo on, put on a gel taco and cure that shit fo a minute.
A term used mainly by Canadian youtuber Cristine (simplynailogical) when referring to "clear top coat". Many of the people watching her channel have started adopting the term.
-Taco is an anagram for "coat", also used by Cristine in other terms such as: "holo taco"
-Glossy means "shiny". It adds a shine on the nail instead of take away from it like the opposite: "matte top coat". Matte top coats once dry, do not reflect the light thus destroying the holo (holographic) nail polishes that this particular youtuber loves)
1. I bought a new glossy taco because the one I had wasn't drying fast.
2. Add some glossy taco to seal in your design because we're putting nail vinyls next.