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The Capital Late Show With Marvin Humes 10pm - 1am
1 April 2014, 10:05
The 'She Looks So Perfect' stars show why it's best not to leave your Twitter account open.
5 Seconds Of Summer have been providing a welcome reminder why you should never leave your Twitter account open.
The boys stopped by Capital recently and managed to get into presenter Kat Shoob's account.
The prank was captured on film and sees Calum, Michael and Luke deciding to play around with her name and profess a love for the Aussie stars.
Ashton is busy tucking into his lunch but still finds time to offer his band some moral support.
5 Seconds Of Summer's debut single 'She Looks So Perfect' went straight to the top of the Vodafone Big Top 40 last month but was knocked off the top spot by Aloe Blacc this week.
Check out some more of our favourite pranks below: