After a short but truly perverted research, I found out why some people (myself included at first), had trouble getting the pervert medal. You don't really have to click her a lot, just 10 times. The thing be careful about though, is that you should click in Epic Battle Fantasy 3 but not Mardek. I tried clicking in Mardek but the breasts just won't budge, or bounce.
With the neat and tidy (Mardek 1 and 2 are not) menus, I realized why I hate Mardek series. Interesting at start, but boring in the long run. I found I've spent 37 minutes with only a sluggish progress. So why? Too much battles!
IMPROVEMENT: Just tone down the battle frequency a bit.
 "Monster Slayers"){kind=icon}
 "Robot Wants Ice Cream"){kind=icon}
 "Epic Battle Fantasy 3"){kind=icon}
 "Epic War 4"){kind=icon}
 "MARDEK RPG: Chapter 3"){kind=icon}