They are the two kids who share earbuds, tease each other in the halls, and basically act like a couple. They like to skateboard, and often do it together. Not the most popular couple, but are known by others. They overall seem like really cool people, and look awesome together.
Person 1: Yo did you see that skater couple?
Person 2: Yeah. They looked really cool.
A way of saying "one thicc boi". The "un" is the masculine indefinite article, meaning "a", from the Spanish language. "Thicc boi" is from the English language, and when combining these two phrases, makes a Spanglish sentence. This is a better way to say "one thicc boi" and is, from experience, more likely to get laughs. Sometimes you can say "un hella thicc boi" but that can be a bit over the top.
(Eighth graders learning about U.S. History)
Person 1: (whispers) Washington was un thicc boi, am I right?
Person 2: (Trying to muffle their laughter) Hell yeah!!!