The act of taking vyvanse. A state in which someone is so cracked out that they may experience tunnel vision, extreme focus, sweaty palms, clammy extremities, heart attack, and/or death. This person will do nothing but work. The ultimate ADD medicine
I haven't been to class all semester; however, I am vancing so hard right now that I did all of my work. I'm so afraid... I can feel my heart pounding, and my limbs are cold.
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