The submissive brother is smeared with aphrodisiac cream, causing his sister to go into heat like a bitch. When she takes her brother's dick in her mouth or when he thrusts his penis deep into her vagina, the effects of the aphrodisiac naturally make her reveal a sloppy face, drooling uncontrollably. The more intense her brother's thrusting becomes, the more love juices she drips, repeatedly engaging in deep tongue kisses, and finally having thick semen injected into her deepest recesses.
