an American emo band that tons of teenage girls love; thought to be very underrated by them but in fact is very overrated. Also used to describe very long phrases from their song titles
oh, my life is too short to be a fall out boy song title
by gayprawnisosom March 28, 2015
A male or female asshole that has been penetrated so much by penis' and various other objects that when they sit down on the toilet the poop just falls right out.
Wow I hooked up with Sara last night and you could drop a baseball down that fall out boy of hers.
by DonSquigie January 02, 2011
A EMO! band from Chicago that use to be a really big hit before everyone just started to hate them all of the sudden because there stupid Dumbfucks.
Fall out boy IS A EMO band and they play EMO MUSIC! Pete Wentz said so in the aol aim interview look it up : )
Their lyrics are amazingly good and they all rock the house
They still rule and I REAL FALL OUT BOY fans are the best and they understand what they go through.
Fall Out Boy rules...
End of story : )

loyal fan:Hey look at the awesome band !
DUMBFUCK:who fall out boy?
LOYAL FAN: yeah there so awesome
dumbfuck:no fall out boy sucks balls

see in this example the retard that said fall out boy sucked, was killed by one of the loyal fans : )

PS. loyal fans aren't murderers he was just really pissed and then yeah whatever
by tic tac March 19, 2007
One of the biggest emo bands to rome the earth. There main definition is to suck. If you call this real music, you would understand that this is no were near real music...why don't you emo's try some good ol Guns N Roses, Van Halen, Lynyrd Skynyrd, ect. These bands will kick the shit outta this crap anyday.
fag: Lets listen to fall out boy!!
me: You wanna die? Because I'll slit your jugular right here!
by Zastko January 26, 2006
the worst band ive ever heard in my life. period. i dont care if theyre emo or pop or whatever. i could make better music with my asshole.
14 year old: O MY GAWD FALL OUT BOY IS DA BEST!!!!!!!!!
me: grow some balls and listen to Black Flag you fucker
by pure-softness June 05, 2009
A pop punk band formed in 2001 in Chicago, Illinois. They consist of:
Patrick Stump: Lead Vocals, Guitar
Pete Wentz: Bass Guitar, BG Vocals
Joe Trohman: Guitar, BG Vocals
Andy Hurley: Drums

While currently very popular, they are one of the, if not the, most untalented and overrated bands in the world today. Fall Out Boy is an excellent example of just how bad radio-friendly rock has gotten over the years.
Guy: Hey, I'm going to the Dream Theater concert this Saturday. Wanna come along?
FOB fan: Nah, I got two tickets to the FALL OUT BOY CONCERT!!! OMG I CAN'T WAIT THEY ARE AMAZING AND SO HOT!!!!!!!!
Guy: Uh, yeah. Sure. That would be a no.
FOB fan: Oh, who is Dream Theater?
Guy: Never mind. They're too much for your little brain to handle.
by tsman29 February 17, 2008
just another reason for new trier kids to think they are better than everyone else
Fall Out Boy is often linked to emo. I don't know if this is fair to Fall Out Boy, but I do know that they aren't very good
by T-Nigs November 06, 2007
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