I'm not sure if this qualifies for 'evil' - but it was 'evil' in a fun way.
My ex girlfriend had huge natural breasts. 42FFs. She was super tall and blonde so you can imagine that she would demand a lot of attention as it was.
Well, when we first got together, I showed her a video of Sofia Staks bouncing her huge boobs through 'muscle control' - that is standing perfectly still and being able to make those huge things move up and down, side to side, and even in circles - one at a time or singly.
My girlfriend thought it was one of the coolest things ever and set about learning it. She had a much tougher road considering no implants, but she worked at it almost every night faithfully.
She started having to do the "I must increase my bust" prayer position, and barely getting those huge things to move - but after about a year of solid practice, she had great control. She could get about 6 inches of lift/bounce and she could do it with her hands in any position (at her sides, behind her head, behind her back, crossed arms) and keep the rest of her body motionless.
Lemme just tell you - watching her practice once she got GOOD was distracting to say the least. She'd just be sitting on the couch watching tv, completely concentrated on whatever she was watching, and her huge boobs would be bouncing and flexing and dancing and wiggling like they had a mind of their own.
I'm getting off topic: anyways - the story of using them for 'evil'--
Now there is nothing more sexy than when a girl KNOWS what she's doing, KNOWS it's getting you hot and bothered, and winks, or pouts, or raises her eyebrows, or whatever to acknowledge it. My ex used to do that all the time. I especially loved it when she'd do "puppet strings" like having her breasts on marionettes while she flexed, and looking at me and saying "watch this" teasingly first...
along the same lines, i think it's also super sexy when girls look down and watch what they're doing - like they're amused or amazed by it too.
But here's where the evil comes in - there's something to be said when a girl does it but doesn't acknowledge it at all.
We'd go to a restaurant - and my ex would have on a low cut top and when the waiter or waitress would come over to take our order, she'd still be looking at the menu and she'd just nonchalantly flex her huge boobs a few time. You should've seen the eyes bug out of the wait staffs head. They'd stare. They'd look at me like "did you just see that?" and she would just calmly order, look them in the eye or look at the menu and bounce again while she was talking... she had excellent control - could do it with no shoulder movement at all in any position.
Sometimes when she knew she was the center of attention, which was often, and we'd be waiting for a table with a bunch of other people (who we didn't know) we'd sit and talk or she would look out the window and she'd just consistently bounce her boobs, keeping the rest of her body completely still... when you've got 42 FFs bouncing about 6 inches at a clip, people notice!!! and people would STARE like crazy! They'd elbow their friends, and sometimes little [censored] would see it and just yell "Mommy look!"
and depending on how many people had seen her, or her mood of the day - sometimes she'd stop when the mom or dad looked. The mom would say "Shhh. I know. They're big. it's not polite." and go back to their conversation and then a couple seconds later, she would start AGAIN, this time doing one boob, then the other, or switching off each bounce...
you've never heard so many 'oh my god's' whispered at the same time. And my ex would just act like she didn't know what was going on. didn't care. went on about her business...
the funniest one was when we were at a place for lunch, she had been doing the bouncing game for about 20 minutes while we waited, and nobody said anything to her, but they were all staring and we even saw some younger college girls using their hands to move their boobs trying to do it...
well they finally call our name, we get up to walk to the hostess, and we walk a few steps and my ex turns back around to the whole group, looks down at her boobs and says "I guess our table's finally ready. Wave goodbye, girls" and she like "stall waves/jiggles" her left boob, then her right boob, then she puts her hands behind her head and whistles "Shave and a hair cut, six bits" bouncing one at a time and then on the six bits, bouncing both really strongly.
The place busted up. They were laughing, jaws dropping, screaming, yelling wow. I swear - they applauded, and we walked to our table and the rest of the restaurant wondered what the hell was going on.
man i miss those days...