Sexy Candace Cage fucks her sister's boyfriend

So, not quite sure what's going on here. It seems like Candace Cage walked into her sister and boyfriend having sex, her sister receiving a phone call from their mom and Candace then deciding that if her sister's busy she might as well enjoy her sister's boyfriend's dick. Yeah, that seems to be it! He happily agrees because hey, both sisters are pretty hot and he's there to fuck.