Girl, it seems like those youngings get an "A" in my grade book...for "T&A" that is...I feel that it is harmless act and if they were on an assignment for school it was most likely a radical intrepetation of the assignment I bet the teacher didn't say "I want every one of my female student to go out shopping in their skimpiest underware and see if you get a reaction"

Girls will be girls I guess and this may have been a bit of a dare amongst themselves...which in the long run is better than boys being boys and someone getting punched.
.......and better it be a psych assignment than one for biology class, you know the girls looking for men's reactions like the tell-tale tenting of the trousers and all...............

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Sex is a tricky thing best left to professionals.