Start executing the plan

You spot Alex in a distance talking with a few other friends. You slowly walk up to him as he says his farewells to his friends.

"Hey Alex how was your day?"

"Surprisingly good, a sit next to lots of sexy girls"

"Nice, btw how's your sister doing?"

"She's just as slutty as ever, instead that instead of wearing shorts around the house, she now wears thongs and bras"

"If you ask me, that's pretty hot."

"I mean she does I have an extremely nice ass, but she's my sister so I can't do anything anyway"

"But why would it matter, she won't get pregnant so it's all good. In case I need to remind you, she's a complete slut. Look at the way she dresses. Her nipples are always hard and poking out. Her ass is round and soft."

"I'll think about it'

"Not to mention that the last time I was over at your place, she was bragging and showing off the fact that she can deepthroat a 14 inch dildo".

"True, anyway come over to my place today so we can play some games"