How about the mom coming back for another round some days later. Her son isn't around, so she crawls under the bed and finds a dark hole and climbs down. She finde her self in a dark tunnel with light shining from one way, she walks towards it and finds her son and the monster playing cards or something. The monster gets up and uses his aphrodisiac on her again. She gets on her knees and starts sucking both, boy and monster it escalates and gets pretty rough. Next sceene is a hard spitroast. The camera pans out and as it pans in we see her gettig the hardest dp ever, she sais"oh it hurts so good" as she gts pumped full of jizz...