1 definition by DanDantheDietMan

To have a thought pop out of your head. From The Hunting of The Snark, where the Boojum makes you "softly and suddenly vanish away".
"So then I..."
"You what?"
"Gah, sorry, forgot what i was saying. I got boojumed."
by DanDantheDietMan February 22, 2007

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