"5 Gears of Sex", Chip August, January 4, 2008
"Here are Dr. McCarthy’s 5 Gears of Sex:

1) First Gear - affectionate touching: Hand-holding, peck-on-the-cheek, quick hugs, etc.

2) Second Gear - sensual touching: cuddling, kissing, massage (does not include genital touching)
3) Third Gear - playful touching: erotic massage, playing in the bath or shower (includes genital touching)4) Fourth Gear - Erotic touch (non-intercourse): manual and oral stimulation of erogenous zones including genitals

5) Fifth Gear - Erotic genital to genital touch (intercourse)"