The act of inserting the index finger into the vagina and the thumb into the rectum and pinching the vaginal walls, causing either an intense orgasm or an immediate break up.
I gave my girlfriend the pinkpinch last night and today I don't have a girlfriend!
(v) When a male (or in some cases, female) does not understand the art of "finger blasting" or "finger banging" and results in the less stimulating action, "cooch pinch".
A cooch pinch is simply a pinching of the vaginal area.
girl 1: "Did that guy just finger blast you?!"
girl 2: "No, he tried, but he ended up cooch pinching me!"