"Tommy! What are you doing?" She yelled.

Her panties were tiny, barely big enough to cover her sex. What I noticed right away was a crease in the middle of them signifying where her slit was and a dark, wet spot! It was so visible Tommy and John had no problem noticing it.

"Ooops, sorry," Tommy murmured, his eyes on her panties.

I looked sharply at John and noticed he was staring but quickly looked away when I looked at him.

"Tommy, help your sister up," I snapped displeased by how this turned into a perverted peeping-tom session.

However, deep inside me I felt the tense, erotic excitement at the...