Your tiny cock was never going to satisfy your girlfriend. Be a good boy and suck on your bully's heavy nut-sack while she deep-throats his Alpha shaft.
Your bully has vowed to continue holding you by the hair and forcing you to watch him nut in your sister until you thank him afterward, but you keep refusing. Luckily he's not around at night to hear you moaning "thankyousirthankyouthank..." while you rub