a) Fourty-One Days Until the Summer (Hence the band's name)
b) originally, punk-pop band from ajax, ontario, canada, (although now their sound ranges from metal to rap-rock).

Consists of Deryck (Bizzy D):vocals, guitar; Dave (Brownsound): Guitar, vocals; Jason (Cone): Bass and sometimes vocals; Steve (Stevo-32): Drums (and vocals/rapping on pain for pleasure or fat lip/what we're all about) (respectively)

Sum has released four full length albums and two dvds (as far as I'm aware; not counting what they did in Dem. Rep. Of Congo)

Albums: Chuck: 2004/ Does This Look Infected?/2002 All Killer No Filler/2001 Half Hour Of Power/2000
DVDS: Cross Your T's And Gauge Your Eyes, Does This Look Infected DVD.

Anyone who calls Sum 41 is a poser needs to either review what a poser is, stop having an anneurism, or go listen to some of their music. and those who call people who call sum41 posers posers are hypocrites. sorry guys, but everyone has opinion. just dont go around calling every band a poser. unless it's simple plan. thanks for your time.
a) Damnit, I'm Tired Of School. Oh, well; it's only sum 41.
b) Random: Going to the Sum 41 concert tonight?
Other: Yeah, man, it's gonna be dope.
(reference from video of "The Hell Song")
by falseintentionss December 30, 2005
a awesome sounding rock band that gets called fake punks whhen they never atually said they where a punk band.
sum 41 kicks major ass
by ryan December 08, 2004
Sum 41 is one of the best bands ever
For anyone who doesnt no why they're called sum 41, its because they formed the band 41 days into the summer
by me August 19, 2004
A pretty good band. Didn't like how they went more metal on their last album, the sound was good on All Killer No Filler, but they can be excused. Oh yeah... they actually never said anything about being punk, they don't consider themselves punk.
Sum41... uh... writes music. I dunno, what kind of example do you give for a band anyway?
by Fugerko.? December 07, 2003
To all you Sum 41 haters- Sum 41 never claimed to be punk. The lead singer (Deryck Whibley/Bizzy D) even said they're not a punk band. So how are they posers? Anyway its a band who's fans are mostly teeneies who only go to concerts cuz they wanna fuck with Deryck/Jay(Cone) Theres hardly any real fans left.
by Sum_Blue_Moon September 11, 2003
(ninja doesn't know what the fuck they'er talking about because sum 41 is the best band ever.
by alexandria June 30, 2003
Ehh they're okay!

A little gay and Canadian but we'll forgive them.
Whibley's a bit of a cunt!
by fagz suck March 15, 2005
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