By daring her to do something challenging.

You know that, personally Megan is one of those prideful girls who's obsessed over her own image and winning, and so, she naturally engages in all sort of dares and challenges all the time, remembering that fact, made you come up with a plan to erase that smug smile of hers.

"Hey Megan, if you think you are soooo much better than me, how about we do something interesting to see if that's true", you tease her.

"Of course i'm, so what do you have in mind", she replied.

"Well, i was thinking that we could do some sort of dare of challenges to see who's better, unless you're a chicken", you say to her.

"Hey nobody calls me chicken, so alright, i'm in if that's what you want", she replied with a smug smile.

"Good, but to make this more interesting, how about if the loser has to do what the winner says as a punishment", you add in.

"Sound good, because, once i win, you'll have to be my personal servant for a month, how's that ?", Megan says.

"Okay, but if you lose, Megan, you'll have to go naked to the school tomorrow, and stay that way until the school day ends", you add in, in the hopes of making her back off.

"You think you're so clever, well, i'm all in, baby !!, so what challenge do you want me to beat you in ?", she replies confidently.

"How about...", you begin to say, while thinking of a interesting challenge.