It was frustrating

Their apartment had a balcony that overlooked the pool in the main house and Karen stripped off the cover-up she'd worn, and claimed the lounge chair.

Now it was Matt's turn to whistle. His sister's bikini bottom was a thong, exposing her butt cheeks. The top was also barely there, covering her nipples but leaving much of her breasts naked.

"Wow," Matt said. "You look incredible."

"Too bad the only guy in the entire High School who notices is my own brother." She grabbed her trig book and opened it to the day's homework. "Anyway, want to explain this to me?"

"Sure. Uh, aren't you worried about getting sunburned. You're, uh, exposing some areas that don't get much sun."

{if Karen>0}

"What? Are you saying you want to put sunscreen on me?" She looked at the obvious bulge in his shorts. "You really are a pervert, aren't you?"

"Can I help it if my sister is hot," Matt fired back. "I'm a guy. I notice. Sue me."

"If I let you put sunscreen on me, you have to promise not to rub your dick against me. I don't think I'm ready for that much perversion."

"Deal."

"And you still have to help me with my trig."

"Yeah, I know."

{else}Are you seriously trying to perv on your own sister? That is so gross."

"I didn't mean--"

"I'm sure. You think I don't see your boner?" She grabbed her cover-up and pulled it back over her bikini top. "Now, are you going to help me with my Trig or do you need to rush to your room and jerk off."

"Trig," he said, hoping that was the right answer.

"Fine.

{endif}

{if amy=tutor >1}By the way, Amy said you are tutoring her. She'll be over in a bit."

"Great. And, sorry about perving on you."

"Oh, shut up."{endif}