A word that bears different meanings when used by those familiar with the Japanese language from those who speak not a lick of Japanese yet want to seem like they know what they're talking about, AKA your garden-variety weeaboo.

When used by an actual Japanese speaker, it roughly translates to "it is" and is an integral part of Japanese grammar. When used by your average weeaboo, it roughly translates to "I am a stupid American faggot who has no idea what the fuck they're talking about."

japanese for 'it is', often said at the end of sentences to seem cute or unwitting.

A Japanese type word meaning roughly "is, be, are, am". It is very common in Japanese and usually put at the end of a statement.

A Japanese word commonly used to indicate the speaker is a retarded wannabe Japanese anime-whore

As in:

1. Japanese for 'it is.' Often used at the end of sentences.

2. A huge 4chan meme that sorta went on to other sites. Suiseiseki, a character from the anime/manga Rozen Maiden, are nearly always mentioned. It usually is in motivational posters with Suiseiseki.

The one word that every real Japanese person will go insane if you keep on saying it to them, mainly standing for 'it is' to go at the end of a sentence became a big meme of annoying weaboo or otaku. If you're wondering why it goes at the end of the sentence it's because in Japanese sentences are formed differently.

It is said in a motivational Poster that if you keep on typing Desu, you will turn Japanese, people believed that, and that's now what you will constantly hear from people who want to prove they're Japanese, also see kawaii for another annoying weaboo term.

It a meme on 4-chan to let newfag's release the immense faggity inside them. It can also be used by trolls and other such assholes for the same reason. It is often spammed in ridiculous amount and pisses most people off. It has NOTHING to do with pwning or awesomeness.