Your sister helped herself to a little concoction you mixed up for your girlfriend. Side effects include: breast growth, bimbofication, extreme horniness. Anitdote? Cum. It’s either she needs to cum or she needs your cum. You can’t quite remember You really expected to turn your girlfriend into a fun little fuck doll for the night. Too bad the dumbing effects didn’t quite hit your sister. She gives you little choice in the matter. You are going to drain your balls for her whether you like it or not. She needs these huge tits GONE.