here's something from my psych course outline ppt 
omg...this prof...
BEHAVIOUR WITH A BRAIN
FANTASIZING ABOUT SEX
THINKING ABOUT IT
DRESSING SEXY
TALKING ABOUT SEX
DOING IT!
PREPARING FOR IT
FOREPLAY
REMEMBERING THE FIRST OR LAST TIME
RECOGNIZING WHAT LOOKS SEXY/ATTRACTIVE
PLANNING FOR THE NEXT TIMEĀ
..