I will try to give you a list on some Colombian slang or just familiar language.
1. As you may already know our currency is the COP (Colombian Peso) and 1 Euro equals $3.877 today.
So please be familiar with our bills and coins so you don’t get confused when paying. https://www.banrep.gov.co/es/billetes-y-monedas
The reason I mention this is because we refer to money as:
Lucas: usually written as lks. Most of the times this is less than $100.000
- Toca pagar 10 lks pa’ entrar al bar. (pa or pa’ is a shortened way to say para)
Barras: I have the impression it is used when the amount is more than $100.000 and less than $1.000.000.
- Necesito 500 barras pa’ completar la cuota del carro.
Palos: once you start talking about millions. But I guess you’re not spending palos on your holidays.
- Tengo 30 palos pa la rumba de esta noche. (You will probably hear how that “de esta” turns into “desta” because of fast speaking.)
2. Greetings is such a long list. But In case you don’t know some of these…
Quihubo or Quiubo, that comes from Qué hubo.
Quihubo, ¿qué más? would equals Hola, ¿cómo estás?
¿Entonces qué? / ¿Tons qué?
¿Todo bien o qué?
3. Be aware that many people (cashiers, clerkmen, etc, men and women) treat people with nice (sometimes too nice) words. I am pretty sure they will say to you something like:
- Buenos días, mona, ¿en qué le puedo ayudar? (mono/a is blond/e)
They also use words as: reina, reinita, corazón, mi amor, and any other cheesy thing you can think of.
4. Many people call foreigners gringos. This is an interesting word to call people from the US (https://www.thoughtco.com/gringo-in-spanish-3080284). Anyway, when people are blond with light-colored eyes… they’re gringos. They may also tell you on the street: quihubo gringa.
5. In Colombia you don’t order things at a restaurant or at a store, you ask them to give them away.
- Buenas, me regala por favor cuatro empanadas y dos Pony Malta.
6. There are so many phrases and words, así que te tiro un dato: en esos links hay muchas más cosas por descubrir. (Tirar un dato is to give an advice or a piece of information that might be useful.)
P.D. In case you pass by Providencia: Cayo Cangrejo.
Enjoy a lot!