While its exact origins are difficult to pinpoint, the shortened form of "this" likely originated in the early to mid-20th century. It's often used to express a range of emotions, from annoyance and disgust to excitement and approval, and can be used in a variety of contexts.
Here are some examples of its use:
* "Dis is the best pizza I've ever had!" (Expressing excitement and approval)
* "Dis is messed up!" (Expressing annoyance or disapproval)
* "Dis what I'm talkin' about!" (Expressing agreement or excitement)
While the exact origin may be unclear, "dis" has become a widely recognized and used slang term in English, particularly in informal contexts and amongst younger generations.