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!!!
Person 1: (whispers) Washington was un thicc boi, am I right?
Person 2: (Trying to muffle their laughter) Hell yeah!!!
by rootbeer&icecream May 4, 2018
Get the un thicc boimug. 
by Ryanryan6987 September 5, 2021
Get the baby thiccmug. 
A thicc banana is a wiggly giggly phat noodle that is always yellow and is a good use of a helicopter swing
Wow what thicc banana you got there you should helicopter that shit good
I know right I went back home and swung my mom on her hot ass
Wow you should swing that on my dad's anus
I know right I went back home and swung my mom on her hot ass
Wow you should swing that on my dad's anus
by africaboi March 17, 2019
Get the Thicc Bananamug. by Mr.Happy da one October 10, 2018
Get the Thiccmug. Thicc has a nice, sexy amount of jiggle. Obese has no jiggle, just wobble
- may i have some lööps bröther
- may i have some lööps bröther
by TheGreatOldOne March 8, 2020
Get the Thiccmug.