Flirting is 99% body language.

Have you ever seen a girl say, "Hi" as she looks down and up at you taking her time? While there is no overt interest in a benign greeting. Her body is relaying sexual interest.

Flirting can be as simple as telling a girl, "Its a beautiful day outside" and smiling.

Do one of those foreign dating sites. Chat with random hoes to practice your flirting skills. See what works and what doesn't.

Flirting is not something you can say. It's an entire package deal of body language a rapport, that's laced with reciprocal expressions of interest. If you're Joe Rogan, you could probably just walk up to a chick and say "I'd poke YOU in the pooper." and then laugh and everyone would have a good time. It's heavily dependent on your confidence and presence.

Think of a movie when the wife sees the husband talking to the girl from work who comes by to drop stuff off. She can't hear what they're saying but she can see that they are flirting because of the way they smile and laugh and make eye-contact. She fumes when the girl's hand brushes his arm handing him the papers, and goes ballistic as he just pauses and looks at her for a moment before resuming the conversation.

Flirting is difficult to force, and it can be very subtle or very direct. A long time ago, just after high school, I sat next to a girl who was near my friends at a poetry reading. We didn't speak, I just looked at her and brushed the edge of my hand against her hand. She brushed my hand back. I picked up her hand and pressed my fingertips against hers and just stared at her. She didn't look away. Then I took her hand and kissed the back of it like a gentleman and leaned in and whisper-asked if she wanted to go somewhere else and hang out. She stood up and followed me to my car where we made out for a half an hour before heading to her place.

My point is that flirting doesn't need words to work, it is mostly body language. Words can frame things more sexually and help establish comfort and rapport, but without touching, eye contact, confidence, and a projection of sexual appetite, there is no flirting. Things like jokes and innuendo have there place, but if a girl likes you, she'll laugh at the dumbest thing and if she doesn't she'll scowl at the best joke in the world. Banter has its place as a qualifier to show you are intelligent, sexual and fun, but is way below other factors in terms of driving arousal and attraction.

The things that arouse and attract girls during flirting: 1) Sexual confidence 2) Sexual intent 3) Displays of high value 4) Displays of wit/banter 5) Mastery of subtextual communication/innuendo, etc. 6) Reciprocal escalations of banter, kino, etc.

This doesn't matter if its a stranger or a 10 year LTR. It's the same factors, confidence and body language that drive flirting.