Summer's roommate, Luscious, promised to make a special treat for her. Summer wanted a small shake, but Luscious has other plans. She decides Summer needs some extra calories in her dessert and adds two secret high calorie boosts to the mix. She stirs it in with an already calorie filled peanut butter milkshake, so Summer won't even know what is in this concoction. Summer finds her secretly fattening treat on the counter and slowly beings to sip on it. As she gets a taste for this thick shake though, she starts to chug it more and more until every drop is gone. Hopefully her roommate made more! KEYWORDS: bbw, ssbbw, fat fetish, weight gain, chugging, feeder, feedee, feedism, belly fetish, messy, gluttony