Hey-O

Something said after a conversational phrase that could be interpreted as a sexual reference is said.

John: "Dude, did you do the Bio assignment?"
Mark: "Yes. That was so hard, it kept me up all night!"
John: "Hey-O!"

Hey Shithead

A greeting along the lines of the Scottish slang "Hey, cunt!" or the African American slang "Sup, nigga!" wherein one uses a usually derogatory term or insult in a sense of comradery wherein it's not insulting when used between friends or homies.

"Hey shithead!"
"OH MY SHIT!"

Hey guys

Hey guys - used when you want to say hey to guys and such.

Guy 1 'hey guys'
Guys 2 and 3 'hey guys'
Random guy 'hey guys'
Ladies 'hey guys'
They 'hey guys'
ECT,.

hey☺️

She likes you at wants to fuck or wants to date

Boy :hey

Girl:hey☺️

Hey you

A greeting used by a women to tell a man that she wants his dick in and around her vaginal areas. Most commonly used in romantic situations.

Women : "hey you"
Man: "hang on let me buy some rubbers"

Hey-sus

An exclamation, much like "Jesus Christ!", but with proper Spanish pronunciation.

"Hey-sus, there's an anvil approaching my head!"

Hey Sisters

Something James Charles says at the beginning of all his videos.
Also what some other people (most likely stan twitter) might say when greeting their fellow sisters (friends).

James Charles: “HEY SISTERS! WELCOME TO ANOTHER SISTER SPECIAL VIDEO! TODAY I’M GOING TO BE SHOWING YOU MY MORPHE KIT!”—— and then he continues to add sister of to everything that starts with an “S”