There are several different degrees of “Hellos” that I have noticed in my time on Earth. For those of you who don’t know, these acknowledgments are for people you’ve already know or have met. There are separated by vocal and or physical signals, plus distance (note: I will refer to any human as a She, because it could easily be written as S/he because it applies to both sexes) :

DISTANCE: LONG ( 50ft +)

• “HEY!/YO!” + Double/Triple Hand Wave

She likes you. Bonus if she waves you to come over to talk, or if she comes over to you.

• “Hey” + Hand Wave

She thinks your cool, but that’s it.

• Hand Wave Long
  

You’re not highly regarded nor disregarded. You’re just there to say hi to.

DISTANCE: MEDIUM (20 ft + or-)

• Hand Wave Short

You’re not highly regarded nor disregarded. You’re just there to say hi to.

• Quick Draw + “Hey”

She quickly raises her open hand to show it to you and says “Hey,” and quickly withdraws her hand. She’s just being nice.

• Quick Draw (no vocal signal)

She’s trying really hard to be nice to you and acknowledge your presence as quickly as humanly possible.

DISTANCE: SHORT (5-10ft)

• Surprise Attack

She sneaks up on you to say hi. She likes you.

• Hug

There are many different types of hugs, as defined by the FREE HUGS GUY, but mainly, the tighter and longer and closer they hug you, the more they like you.

• Hi-Five

She hi-fives you. You’re too cool.

• Hand Shake

You’re fine to interact with. You’re non threatening. Not too exciting either.

• Head Nod

She’s too cool to say Hi to you. She thinks you’re… okay.

• Eye-Ups (optional: Head Nod)

She barely moves her eyes and eyebrows up to acknowledge you. She doesn’t like you very much.

• The Glance of Death

She barely glances at you and then immediately looks away. She thinks you’re ugly/ annoying/ anti-social/ smelly/or ugly. PLUS she doesn’t like you.