1. exclam.
A popular line from one of them Narnia books, in which the presence of a big lion is announced.

2. exclam.
Something to say the day after a big curry, when your stomach emits a huge roar and you have to run to the crapper before your entire digestive system ends up in your underpants like a big steaming pile of wildebeast entrails.
"I'm sorry but, could you direct me to the lavatory, Aslan is on the move, you see."
by Fhashstark June 21, 2006
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When you suddenly and unexpectedly find yourself needing to go to the toilet for a number 2, such as when suffering from diarrhea.
"Gotta run to the toilet again, Aslan's on the move!"

"Quick, where's the toilet? Aslan's on the move!"
by syrafex July 24, 2008
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