During very boring staff meetings at work, I will often start contracting my pelvic floor muscles in a rhythmic fashion that gets me very aroused. After a few minutes, my clit stiffens and rubs against my clothes which really gets me wet. I just sit there thinking about how good it all feels while my colleagues are droning on, with the knowledge that they have no idea what I am doing. When I come it is not an earth shattering orgasm but a series of lovely subtle waves of pleasure through my body. I usually have to catch my breath as I obviously can’t make any noise, and this having to keep quiet intensifies the pleasure. Very diverting, and exercises those important muscles for sex too!