COPENHAGEN, Denmark - Get ready for more shenanigans, Canada. Or maybe that's all part of the hoax.

It's difficult to know what's real and what's not when it comes to the murky, madcap world of the Yes Men.

The notorious group of pranksters had some people going on Monday with a prank on Canada over its stance on climate change.

Now those same tricksters are suggesting they'll keep up their antics, and Alberta's tarsands could be their next target.

The New York-based group told a Twitter audience on Tuesday they pulled their prank to teach people "about Canada's true nature and their responsibility to the developing countries" over climate debt.

But they conceded their message didn't come across as clearly as they'd hoped -- so more pranks could be on the way.