You were at a party in your college days when you discovered your wicked side.
You've seen him eyeing you the whole time you've been there. Every time you've looked his direction you see him quickly looking away trying not to be obvious. He's clearly the shy nerdy type who thinks you're way out of his league and frankly you are. While he's not really your type you decide why not have a little fun with him.
You start by sitting on the sofa next to one of your girlfriends and while you're chatting with her you 'accidentally' let your legs part enough to where you know he can see your panties. You know he sees them because the next time you look his way, he turns away fast, and you see his face start to go pink. He's trying to act cool talking with a couple of other guys, but you know he's looking your way every chance he can get.
Your friend encourages you so the next time he looks your way you open your legs a bit more and when you look his way you lick your lips in a seductive way. You know he sees what you did because he chokes on his drink and goes slightly pink again.
You watch as he tries to very subtly shift his waist, so you know he's getting hard. "Mission accomplished," you think to yourself and you're about to leave it at that when your wicked side kicks in again. You decide to keep the upskirt up a bit longer knowing he can't resist peeking. In addition, you decide to adjust the top of your dress, so the outline of your lacy pink bra is showing as well as the edges of your breasts.