I wanna bang my GF's sister. What's the most tactical way to go about doing this?
Looking for some Sisterly love.
Dear Sister lover,
When requesting this of your GF make sure she knows the only reason you want to plow her sister is because you love her so much that you can't get enough of her. In an attempt to get even more of your GF you're resorting to the next best thing, her sister (and later her best friend). If she's understanding, and I think she will be, she'll not only allow it but join in for the triple play. At least that's been my experience.
PS: Her sister likes tossing salad so be sure to scrub up well before you go to do the deed and tell her I said "hi".