By Hillary Busis
October 29, 2012 at 02:42 PM EDT
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Richard Cartwright/Univeral Pictures

Emma Roberts isn’t the only famous person who got meta this Halloween weekend. Apparently, Sum 41’s Deryck Whibley and his girlfriend Ari Cooper celebrated the holiday by dressing as Avril Lavigne — Whibley’s ex-wife — and her fiance, Nickelback’s Chad Kroeger. (That’s Whibley as Lavigne; Cooper as Kroeger.) Talk about storming through a party like your name was El Niño!

Ah, but this torrid Canadian soap opera doesn’t stop there. When the real Kroeger heard about Whibley’s diss, he responded with an “oh, snap” moment of his own via Nickelback’s Twitter page:

Will Whibley retaliate by wearing a t-shirt printed with Urban Dictionary’s definition of Nickelback — “The act of willfully allowing one’s ears to bleed”? Will Kroeger respond in kind by seducing Cooper at an Anne Murray concert? Find out next week on Degrassi: The “Rock Stars” Generation.

Read more:

Emma Roberts dresses as Aunt Julia in ‘Pretty Woman’ for Halloween: PHOTO

Avril Lavigne, Nickelback frontman Chad Kroeger engaged

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