It's an IOI if-

It's an IOI if-

what she says

-she tries to end silence; ex- "so..." (credit mASF)
-she initiates contact with you
-asks about name/age/ethnicity/fragrance/clothing (credit Hysteria)
-married women talks incessently to you, yet never mentions the husband (credit Vapor)
-asks you if you're leaving when you put something away or put on your gloves, etc (credit adamm411)

what she does

-she plays with her hair while talking to you
-you sense jealousy when you mention another female
-she initiates kino
-she makes eye contact then smiles at you (credit syren)
-she brings her group of friends to stand near your group of friends and keeps looking over (credit syren)
-she watches you on the dancefloor (credit syren)
-body language i.e If she moves her body around to face you while you are talking (credit Malibu)
-grabbing hat/ring etc. and putting it on unprovoked or touches any article of clothing (credit acqyr and Katil)
-legs become intertwined with yours (credit Jester)
-leans in while talking to you (credit Jester)
-looks at you when you look away, then turns away when you look back (credit Jester)

You absolutely know you're in when

-she puts her hand on your leg
-licks her lips when talking to (credit Jester)
-she tries to grab your attention constantly (credit Jester)
-she grabs your crotch or ass (credit acqyr)
-you can see her giving you the doggy dinner bowl eyes (credit X-Ice)
-she takes your cell phone without warning and she put her phone number in (credit Top Gun)

How do I do this?

gPUAs (Green PUAs/Novice PUAs)- Look for any three from the top two columns or a single one from the last group. Follow it by isolating ("Hey, let me show you something" and take her somewhere private), re-engaging (return to your kino and soften your voice), and make your move ("Do you want to kiss me?" or "Let me show you something for a second. Close your eyes.". mPUAs (master or instructor-level PUAs)- You know what to do already.

An IOI test

You're walking with a girl towards a couch and chair set. You sit down on the couch. If she follows you to the couch instead of sitting in the chair, she's ready.