We called out to a close brother and sister and asked them to try a one-night stay mission! To make the brother and sister think, "There's no way we'd have sex together!", we prepared some Viagra to make them even more excited! The brother drinks it on a whim, but a few hours later... his cock is so hard it hurts! When the sister sees this, her pussy gets hot without even thinking! It's only natural that they'll resort to incest if they get excited with each other under the same roof! It doesn't end with just one shot, and they end up cumming inside!