Like many celebrities, Justin Bieber has also taken up the now-viral ALS Ice Bucket Challenge.
He posted his second challenge on Instagram, challenging his 'Beliebers' to attempt it.
However, eagle-eyed observers noted that he had a bucket of water -- but where was the ice?
The idea is to fill buckets with ice water to get the full temporary effect of ALS sufferers.
Some speculated that he probably just used warm water, and others were extremely miffed that the popstar had "cheated".
While some defended him that the ice could have melted, others observed that other celebrities had done the ice bucket challenge on a hot sunny day -- with tons of ice cubes falling out.
His first attempt at the Ice Bucket Challenge included nominating US President Obama.
Various sites like brobible and guardianlv also expressed the same views that Bieber had done it "wrong".
What do you think? Watch the video below to determine for yourself.