Why do girls squrt?

Her G-Spot, stopping, putting pressure on it, then tapping it glaze over it lightly at first..side to side and under it faster. She has to be relaxed and built up. It is a full body orgasm. You can do this with a finger to explore exactly what spot, with your fingers always pointed up in the "come here to me" type of hand motion, never down towards her anus and never poke in and out. She will tell you what spot so you tease, tap, add pressure at a stop a few sec then fast.