The reading for this word is an exception. Here's a mnemonic to help you remember it:
If you tease someone with a prank that makes them eat zoo rats (いたずら), you're a jerk. That's less of a prank and more like abuse. Cut it out.
Pranks are popular among children right now.
Come on! Stop teasing me!
I make a living by selling interesting prank ideas on Yahoo! Auction.