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Many people do not know this, but Jamster was acquired by VeriSign in 2004. VeriSign maintains the DNS database for all the .com and .net domains worldwide. So the same company that lets you visit urbandictionary.com is slowly destroying your brain with Jamster commercials.
<Roger> Hey man, this Jamster commercial is annoying.
<Tim> Huh, what did you say? I was too busy listening to the sound of my brain imploding.
Jamster by A Jenks June 30, 2005
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probably the most annoying commercials ever created with the most retarded ringtones and wallpaper for your cell phone. created for fucktards of america.
you might find yourself ordering the 'sir mix a lot' ringtone while very drunk or stoned late at night watching mtv, then you wake up in the morning and feel like you have been cheated out of life.

drunk person: "man last night i think i got jammed"
jamster by val February 1, 2005
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A ringtone company that is responsible for producing the most unbearably irritating commercials to have ever plagued television. Most hideously annoying of all is that sodding "frog" (which resembles a swollen tumour given eyes, a helmet, and tiny genetalia with a "Censored" tag crapped across it), whose high-pitched squealing, ridiculously annoying animations and general nature, all proves that Jamster is making their profits from a DELIBERATE attempt to drive people insane. So far, for many audiences, it's working.

Aside from that sodding amphibian that's become Jamster's most infamously irritating mascot, Jamster provide equally annoying ringtones, wallpapers and screensavers, many of which are crass, crappy, and/or lame, 4-5 frame animations. Anybody willing to waste money for something that was directly manifested out of pure hate, evil and a company's desire to further shove one more annoying commercial into the TV network's already over-bloated advertising market... need to be cleansed from the human gene pool.
Watcher #1: "Oh shits, not that fucking Jamster commercial! SHIT, where's the fucking remote?!"
Crazy Frog: *mimics a DJ whilst squeaking in pitched tones*
Watcher #1: "Ah, shit! I can't find it! Quick, do SOMETHING!"
Watcher #2: "AAAARRGGGGH!!" *hurls a baseball bat into the TV-screen*
Watcher #1: "That's the third fucking television Jamster's caused me to break. Fuck, I need to start keeping track of where the remote's kept."
Jamster by Alhadis May 27, 2005
Really STUPID COMMERCIALS THAT APPEAR ABOUT 3000 TIMES A DAY ON MTV ALONE AND THERE IS NOTHING WE CAN DO ABOUT AHHHHHHHHHHHH!!
Larry: Hey dude listen to my Jamster Ring t-
Bob: (fires magnum at larry)
jamster by Oz January 17, 2005
Possibly the closest thing to e-mail spam on television. Advertises their awful "Crazy Frog" ringtone on just about every music channel in the UK through a series of incredibly annoying commercials.

The Frog looks even stupider now thanks to dumb Christians who couldn't handle it's genitalia.
On VH1 Classic for example, Crazy Frog adverts are shown like twice every break.

Not to mention Jamster also makes ringtones for the newest hits out there, such as Britney Spears and 50 Cent, and advertises them on VH1 Classic, of all channels. Doesn't make much business sense to me.
Jamster by ATH April 9, 2005
one day i'm gonna stab jamster with a plastic spoon.
jamster by MasterJoe August 13, 2006
Annoying little shit-tard of a mobile phone/ring tone commercial company that has taken over the world and infected our homes and the streets with the ever annoying "crazy frog"! jamster likes to appear on T.V every 2 minutes with its creepy necropheliac frog with a teeny prick and a retard helmet singing like a freakin grand prix race. Crazy frog (aka Axel F) has even made it to #1 here in Australia and in the UK music charts!!! (sad but true! ) aghhh...god help us!!!!
bing bing baaawww baaww baww...ding ding ding dading ding dawwwg dawwg!!!!!

FUCK! CRAP! SHIT!!!!!! I can't get it out of my head!
jamster by u r cool September 14, 2005