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1.
Manner of speaking commonly used on Instant Messaging Services, such as AIM, Yahoo, MSN or, to a lesser extent, IRC and Message Boards. Abbreviations are commonly used, and many are made up on the spot. Captitalization his rare as are puncuation marks. This may also be called n00bspeak or one of many other names.

It is not uncommon for the speaker to appear Illiterate.
AIM101: OMFG, did U C my GF @ the par-T w/ her BF!! im so :-(

DNA42: What the fuck did you just say?!

AIM101: JC! if U dont sp33k 1337 U R teh 100sR

DNA42: Stop speaking AIMglish you fucking pussy
by Darth_Vaders_Cousin October 08, 2006
 
2.
Manner of speaking commonly used on Instant Messaging Services, such as AIM, Yahoo, MSN or, to a lesser extent, IRC and Message Boards. Abbreviations are commonly used, and many are made up on the spot. Aimglish is essentially the butchering of the American English Language. Captitalization his rare as are puncuation marks. This may also be called n00bspeak or one of many other names.

It is not uncommon for the speaker to appear Illiterate.
AIM101: OMFG, did U C my GF @ the par-T w/ her BF!! im so :-(

DNA42: What the frag did you just say?!

AIM101: JC! if U dont sp33k 1337 U R teh 100sR

DNA42: Stop speaking AIMglish you pussy
by Darth_Vaders_Cousin October 10, 2006