The guys of 5 Seconds of Summer like to get competitive every now and then aside from their jokester tendencies.

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Ashton Irwin, Calum Hood, Luke Hemmings and Michael Clifford apparently got a little competitive Thursday night.

The band's drummer Irwin shared a photo of Hemmings strumming a guitar.

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It seemed totally innocent until Hood challenged him later on when he shared a photo of Clifford with a guitar.

"@Ashton5SOS my guitarist against yours," Hood tweeted with the photo.

Fans of the band were delighted to see the playfulness between the bandmates, claiming it's "Malum vs. Lashton".

The outcome of this guitar-playing duel is not known, but the band did possibly tease the title of their next album. It appears to be a joke, but one can never be too sure with these Aussies.

A ballad that was written on Thursday apparently inspired this potential album name.

"The album will be called Tender SOS ‪#tendersos," they tweeted.

Apparently some fans thought the band meant to say "Tinder" like the dating app instead of "Tender" though. This caused the band to definitely shutdown the "Tinder" idea.