That band with the 4 hot dudes from Australia.
Kid: Mom will you read me a bedtime story?
Me: okay, it started out a weekend in May
Kid: 5 seconds of summer Everytime mom
by GallchobhairJ January 28, 2015
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An Aussie band including Luke Hemmings - Lead singer, Calum Hood - Bassist, Michael Clifford - lead guitarist, Ashton Irwin - Drummer, and Niall Horan - Volunteer Fan
"LET ME BE IN THE BAND" - Niall Horan/5 Seconds of Summer Volenteer Fan
by Girly Girl11111 November 01, 2013
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5 Seconds of Summer (5SOS) are an Australian band (not in the same category as boyband because they're all talented as shit as far as instruments) that consists of Luke Hemmings (vocals/guitar), Calum Hood (vocals/guitar), Michael Clifford (backing vocals/guitar), and Ashton Irwin (drums). Schoolmates Luke, Calum, and Michael formed 5sos in 2011, and Ashton was later added. They are the opening act for One Direction on the Take Me Home North American leg. Now, I could go all day about my feels and how much it hurts but I'll keep it at this: these boys are sex. their music is keeps me jamming. cake for life.
"Hey, what you think of 5 seconds of Summer?"
"5SOS MAKES ME WANT TO DIE"
by sixteenandugly June 30, 2013
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A band which calls themselves punk rock while in reality they are just a bunch of idiots iding on unicorns and chasing rainbows.

THE ARE NOT A BOYBAND!

These 4 Australian dorks also save the lives of a shitload of people every single day.
5 Seconds of Summer saved my life.
by Smutty Penguin June 14, 2015
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5 Seconds of Summer (5SOS) are an Australian band (not a fucking boyband) who enjoys teasing their fans and seeing them suffering. It consists of Ashton Irwin, Calum Hood, Luke Hemmings, and Michael Clifford.
5 Seconds of Summer also called as 5sauce
by Ash5soAsh March 29, 2019
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Band members: Calum Hood, Luke Hemmings , Ashton Irwin and Michael Clifford started by posting YouTube videos of themselves doing covers. They gained more popularity when going on tour with One Direction. They started Sounds Live Feels Live tour shortly after their album Sounds Good Feels Good was released.
When you are reading a Wattpad fanfic and
someone says something about 5 Seconds of Summer:

Me: 5SOS af
Stupid Girl: What is 5SOS
5SOS fam 1: get outta here
5SOS fam 2: You didn't just say that
5SOS fam 3: Oh My Hemmo, what areyou doing with your life gurl...
by xoxo Meg March 16, 2016
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A shitty boyband. They themselves aren't bad, but it is their unbearable fangirls who will deny to the grave that 5 seconds of summer is a boyband. The main argument is that they play their own instruments so that disqualifies them from boyband status, which of course is false. Also more annoying is the imaginary link that has been made with this boyband, and real punk rock bands. They and their fanbase like to wear classic punk rock t-shirts, although most of them have no fucking idea what they are wearing.
Fangirl: "I love 5 Seconds of Summer!!!"
Me: "Do you also love The Misfits, since you are wearing the Crimson Ghost?"
Fangirl: "Isn't The Misfits a clothing brand?"
Me: "Please take off that shirt and proceed to set yourself on fire."
by Leroy Sid December 22, 2014
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