Sister's room.

As you enter, you notice a rainbow assortment of thongs, G-strings, boy-shorts and other panties are covering every surface in the room and a range of bras, from plain to fancy lace, are hanging from every knob in the room apart from yours. Clearly, your sister, Natasha, has been victim of a hurricane with a panty fetish.

Making your way over to the bed, you see your sister, fast asleep, wearing only a blue t-shirt and a pair of pink boy-shorts. She'd kicked the covers off herself, sometime during the night, leaving her beautiful body on full display, as she lies on her back.

Her little pink boy-shorts really seemed to be struggling to contain her vulva, as she had a pretty impressive camel toe going. The smooth tan of her skin making the sight even more tantalising.

Then, you remember the strange energy from before. It happened with your mother, so, why not your sister too?

You begin running your hand up your sister's body, along her leg, over her groin - giving it a rub before moving up - and, finally, reaching her breasts, two small mounds, tipped with small erect nipples, poking through her shirt, where you feel the energy pass through.

Before you get to do much more, though, Natasha turns over onto her stomach, stretching herself out over the bed, leaving her generous behind, which is tightly packed inside her boy-shorts, in full view.

Too much to resist, you lightly stroke the silky skin of her lush behind, or, at least, what her boy-shorts let you get at. Emboldened by the sensual smoothness of her buttocks, you side your hand under her tight little shorts and begin squeezing her perky little posterior.

Clearly, she is enjoying it, as she starts moaning in her sleep.

It doesn't take long until you work out that you can't do much more, with her in these shorts. They were simply too tight.

Perhaps, you could do something else?