Simply put, Masturbating. Can be used in a masculine or feminine form.
After Dan was done with his new playboy, he felt like greasing the lanes.
The area between your anus and scrotum. Also known as the taint, grundle, gooch, gieche, perineum, nifkin, tweren't, twasn't, chode, or ass neck.
After mike called her a bitch, she kicked him squa in the skrap.