Crazy motherfuckers who will distroy you if you say anything about 5sos that they disagree with.The 5sos fam are not fans but a family...who will cut the shit out of you. :)
Ex.
Lexi: This is my favorite band.*points to picture*Im apart of the 5sos fam.
Tom: Eww boybands
*Slash*5sosfam5secondsofsummer5 seconds of summer5sosfamfamilyashton irwinMichael CliffordLuke HemmingsCalum hood
by Mrs.Collinsxxx December 7, 2015
Get the 5sos fam mug.
The group of fans of the Australian band 5 Seconds of Summer or 5SOS. This is actually a short form for the 5SOS Family, but is more commonly used to describe the fans. The band consists of Michael Clifford (guitar, backing vocals), Calum Hood (bass guitar, vocals), Ashton Irwin (drums, backing vocals) and Luke Hemmings (vocals, guitar).
Fan 1: Are you part of the 5SOS Fam?
Fan 2: Of course! I love them and their music.
by adedicated5SOSfammember December 29, 2014
Get the 5SOS Fam mug.
Literally the best fandom in the word

5SOS actually appreciate us and notice.
Fan A:I can't believe 'Beliebers' won!!! (iHeartAwards, Best Fan Army - 2016)
Fan B: I know!!! We should have tried harder. The 5SOS Fam have already won for 2 years
Literally every member of 5S0S: Even though we didn't win, we appreciate you guys. We know how hard you worked, we are already winner because we have you guys
by XXNatalieHoodXX April 16, 2016
Get the 5SOS Fam mug.
The group of fans of the Australian band 5 Seconds of Summer or 5SOS. This is actually a short form for the 5SOS Family, but is more commonly used to describe the fans. The band consists of Michael Clifford (guitar, backing vocals), Calum Hood (bass guitar, vocals), Ashton Irwin (drums, backing vocals) and Luke Hemmings (vocals, guitar).
Fan 1: Are you part of the 5SOS Fam?
Fan 2: Of course! I love them and their music.
by adedicated5SOSfammember December 29, 2014
Get the 5SOS Fam mug.
A big ass army of people that would be willing to sell their souls for the pop-rock band 5SOS. They all have a deep and incurable obsession with 4 hawt af Australians that happen to be incredibly talented.

Once someone falls into the 5SOS Fam, there's no way out, trust me.
I'm 3737320947923% done with the 5SOS Fam but I can't escape the memes
by smallmf June 5, 2017
Get the 5SOS Fam mug.
A large family that adore four tall sexy aussi lads from the band 5 seconds of summer. They all share one mother called liz Hemmings aka queen liz or mumma liz. They are the sassiest people you will ever meet. (Mumma liz taught us well). Never get on the wrong side of the 5sos fam it is a place you don't want to be.
All other fandoms: " dont mess with the 5sos fam they will win they always do"
by ImaslutforLRH February 18, 2016
Get the 5sos fam mug.
The fans for the Australian band 5 Seconds of Summer or 5SOS. A short form for the fandom name is the 5SOS fam. The band consists of Luke Hemmings (vocals, guitar) Michael Clifford (backing vocals, guitar) Calum Hood (vocals, bass guitar) and Ashton Irwin (backing vocals, drums).
Fan 1: Are you part of the 5SOS family?
Fan 2: Of course I love them and their music!
by adedicated5SOSfammember December 29, 2014
Get the 5SOS Family mug.