Common Phrases and Expressions:
* "Catch you later" instead of "See you later"
* "What's up?" instead of "How are you?"
* "I'm gonna..." instead of "I am going to..."
* "You know what I mean?" as a filler phrase
* "Piece of cake" meaning something easy
* "Hit the road" meaning to leave
* "Chill out" meaning to relax
* "That's the bomb" meaning something is great
Slang Words and Phrases:
* "Dude" referring to a person, often a male
* "Epic" meaning something amazing
* "Hangry" meaning hungry and angry
* "Netflix and chill" meaning to watch Netflix and relax
* "Salty" meaning upset or angry
* "Lit" meaning exciting or fun
* "YOLO" (You Only Live Once) - meaning to seize the day
Regional Colloquialisms:
* "Y'all" (Southern US) - meaning "you all"
* "Pop" (Midwest US) - meaning "soda"
* "Wicked" (New England US) - meaning "very" or "extremely"
* "Auld lang syne" (Scotland) - meaning "old long ago"
Informal Language:
* "Gonna" instead of "going to"
* "Wanna" instead of "want to"
* "Gotta" instead of "have to"
Note: Colloquialisms can vary greatly based on region, age group, and social context. What is considered colloquial in one place or group may be considered formal or even slang in another.