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..."
"Gah, sorry, forgot what i was saying. I got boojumed."
Type your email address below to get our free Urban Word of the Day every morning!
Emails are sent from firstname.lastname@example.org. We'll never spam you.