I Love alot of their song so for me this is REALLY difficult but i need to say The Take Over, The Break's Over

I Slept With Someone In Fall Out Boy And All I Got Was This Stupid Song Written About Me

It is one of my favorite songs

For me it's grand theft autumn ~ fist song I heard by them... it could also be Sugar We're Going Down though because it was the first one that has a lot of radio time :D

Grand Theft Autumn! It's THE ANTHEM. With the triangle hand sign thingies.

It has to be Thnks fr th Mmrs that is the Song that my Friends all love even though they don't really like them

For me, it's "Sugar, We're Going Down" because that's the first song of theirs I heard. I also think that was the song that made them lean a little more toward mainstream, which was when they got a lot of recognition...

for me it's nobody puts baby in the corner and grand theft autumn

i cant deside i guess it would be XO or nobody puts baby in the corner but i love all there songs so i really cant say

it has to be sugar cause that is the first song i heard also.

well sugar is the first song i ever heard, but i think our lawyer is a cool anthem "were only liars, bust were the best." also, grand theft autumn is a good one. they've been playing that forever and i dont think they will ever stop

hmmm...I think that "A little less 16 candles,a little more touch me"

i dont care:P

Honestly, what first comes in my mind when "Fall Out Boy" is sed, is ecstasy, Heaven, the world's greatest music, lol. No but really, i actually imagine for a plit second, an Infinity On High concert with flashing blue fluorescent lights. idk why. wasn't ever at a concert like that. but if it's a specific song you're wanting, I can def giv u an answer. Sure, "Sugar, We're Goin Down", "Dance, Dance", "I Don't Care", and "This Ain't a Scene" are their most famous songs but their number one signature song is ALWAYS gonna be Thnks fr th Mmrs. They're not gonna shake tht song off of them in the slightest, EVER. It's not my favorite song even tho I love it and it sends goose bumps down my back every time I listen to it, but it's their most famed song to me.

honorable mention i got to say....