The point during a sexual encounter, when the male initiates sex and the female's immediate vocal responses become intimate as opposed to prior giggling and bullshiting around, i.e. foreplay.
This is a term that my friends and I came up with and use frequently. It is a good word because noone has any idea what you are talking about.
It was all laughing, and giggling, and bullshitting around until Phil threw the gigglebeater on her, and she knew it was time for sex.