A medication to ADHD which is extremely nasty. Has no flavor and usually dehydrates you to the core. Not even water can help you lose your dehydration. You're pretty much fucked for a day after you have it.
Jason woke up and looked for his BB gun to shoot his sister, who gives him Quillivant XR each day. But it was jammed and he ended up throwing up in class the whole day.
by Ilikepigswithiceccream June 01, 2018
Get a Quillivant XR mug for your papa Jerry.
