I’m…I’m just gonna reproduce this paragraph in its entirety:
When Einstein died, in 1955, his brain was removed during an unsanctioned autopsy at a hospital in Princeton. Later, at the University of Pennsylvania, a pathologist named Thomas Stoltz Harvey sliced it up for research purposes but kept some of the slivers for himself. In 1988, Harvey—who’d since been stripped of his medical license—moved to Lawrence, home of the University of Kansas, where he presented one of the slivers to local author William S. Burroughs, after whose death in 1997 it passed into the possession of…I’m going to stop now, because I don’t want to get anyone in trouble. Let’s just say that when I was in Lawrence, teaching at KU, this was a thing that still happened, a hazing that was also an homage: You scooped the bit of Einstein’s brain out of the jar and shook off the excess formaldehyde; then, you put some salt in the crook of your thumb and licked it, after which you took down a shot of cheap room-temperature tequila and sucked on the brain-bit until your mouth went numb—until the formaldehyde paralyzed your lips and tongue and you couldn’t be understood, you couldn’t even feel yourself trying to make language.
Here’s the article from which it was taken.