It was Mabel who was the first to return from a day-stay with her boyfriend. She strutted into the kitchen and caught the two boys making out against the sink, Dipper moaning and gasping while Bill hungrily twined his tongue around Dipper.

Mabel wasn't grossed at all...just, bothered. It seemed annoying to see her brother with a chaotic demon dominating everywhere she went. She cleared her throat and placed her hands on her hips. Both boys stopped immediately and blushed horribly at Mabel.

    "Mind making out somewhere else? My boyfriend is coming and I don't need two gay boys ruining my boy's eyes!" scolded Mabel. Bill rolled his eye and grinded against Dipper while the boy moaned louder and whimpered eagerly. "Ahem!" said Mabel and Bill sighed.

    "C'mon, my cute Pine Tree," Bill purred and grinned at Dipper. Dipper returned a desperate gaze at him and grinned back for the first time. "Let's go upstairs instead..." He lured Dipper out of the kitchen and their feet clattered up the stairs while thumping came along. Mabel guessed that instead they just made out on the stairs; she could still hear her brother's moaning nearby. She sighed haughtily and plumped herself onto a chair.

At 2:00 a soft welcoming knock bounded in the door. Mabel leaped out of her chair and bolted to the door, opening it without a trace. There her boyfriend smiled at her.

    "Matthew!" she squeaked and hugged him. She smiled brighter when she felt those warm arms encase her back.

    "Hey, Mabel!" he chirped and shut the door kindly. He suddenly made a quizzical look at the ceiling. Thumping and moaning ran passed the wooden ceiling above them. "Is that–?"

Mabel refused to let him finish and kissed him. Matthew obliged while they went upstairs, ignoring the moaning all of a sudden. Their eyes were locked together in a lovingly gesture. Matthew pushed the door open and stopped right at his tracks.

    "M-Mabel...what the f-fuck?!" said Matthew.

Mabel blushed embarrassingly and cleared her throat groggily. "BILL, DIPPER! GET OUT!"

Bill slowly turned his neck around and blushed horribly again while Dipper fell silent and miserable. "H-Hey...sis...," Dipper said awkwardly.

Mabel cinched her fists and pointed out the door. "Get out!" she ordered and Matthew nodded.

Bill nudged his eye around the room and finally a "no" spluttered out. He clutched Dipper close and smiled softly when he kissed his cheek.

Matthew spat. "Really? Mabel? I feel so sorry for you. Spending time with pathetic boys? A pine tree and the nacho-demon?"

Mabel began to laugh and that made Matthew beam with a smile. He laughed along and they fell to the floor, looking barely harmed. Bill growled meaningly and sat up, covering himself.

    "You dare call me...a NACHO?!" roared Bill. The laughing couple won with silence. It looked like they had a staring contest. Finally the two rushed down the stairs and shut the door while they headed into the basement.

Dipper sat up too and cupped Bill's cheek, turning his lovely face to look at him. He lightly kissed Bill's lips and felt him grin.

    "Ignore those bozos..." Dipper kissed his ear and giggled enjoyingly. Bill smiled back and nuzzled his forehead.

    "Babe," mumbled Bill and felt up Dipper's sides. "You're sister does not understand true love anymore, does she?"

Dipper nodded agreeably. "Yeah...we can call her FAIL-maker!" Bill raised his brow, not seeing the oun so very...funny.

Dipper frowned horribly and laughed nervously. "I don't...make jokes..." He fumbled awkwardly with his thumbs.

Bill smirked all of a sudden and licked Dipper's neck and pecked his ear lobe. "Let me teach you some real jokes...somewhat sexy...." He nibbled his lips and made Dipper moan. "How about we get illumi-'naughty'?"

Dipper blushed and took a fist full of the golden side of Bill's hair while they laid back again and continued their business. Dipper moaned and gasped while they were locked in passion. Semen spilled out of Dipper's hole while Bill reeled back, his length covered with cum.