Do you want American English or British English? There's a big difference. American: https://www.smartling.com/blog/40-american-slang-words-and-phrases-you-need-to-know/ British: https://www.smartling.com/blog/50-british-slang-words-phrases-you-need-to-know/

Slang tends to be regional. It is also based on culture, age, and education level. So you can only be specific about slang in a particular location with a certain type of group. For example, several on Norbi's list either do not work in my region, or have a different meaning. There is a lot of slang we use in my city that is almost unique to us. So the real answer is that there is no answer. You can only ask it about a certain group of people.

Aint (am not, isn't, don't, doesn't, are not) || To be amped - to be excited about something || To be hooked on something - to be addicted Sup - What is up? Wanna,gonna,finna,Imma,gotta,lotta,needa,tryna = Want to, going to, going to, goint to/I am/I will,have to, lot of, need to, trying to || Buck - American dollar || Creep - unpleasantly weird person || Hang out/Chill - spend time with someone in a social manner || Fam/Homie/Bro - Friend || What the lick read - How are you doing? || How ya deal with - How are you doing? || Wrist - Watch || Ice - Diamond or jewelry || Ight - Alright || Em - Them || Make out - Make love || Fly - Look good || Whip (car) - Drive a car || Wired up - Angry || Flossin' - To show off || Prolly - Probably || On fleek - It's a word to describe something that's nearly close to perfection. ||

If you count phrasal verbs as slang, this site might be useful: http://phave-dictionary.englishup.me/

Hey, what's up? Meaning: What is going on? “You look beat, what have you been doing?” “I’ve been helping my dad in the yard all morning.” Meaning: You look really tired. (top portion) I was helping my dad with yard work all morning (bottom portion)