The official guidelines for speedy deletion are at Wikipedia:Criteria for speedy deletion. But if your article is on this list, I can promise you it will be speedily deleted:
- Your unsigned rock band that doesn't meet WP:MUSIC. This is especially true of the band you started last week, and that's still looking for a bass player. It is also true of any artist or band that is "currently working on their first album/EP/mixtape". See Wikipedia:No one cares about your garage band.
- Any article whose sole point is to announce that its subject is gay. See Wikipedia:Attack page.
- Any article that begins, "Not much is known about..."
- Your backyard wrestling league, or any of its members.
- Your fantasy wrestling league.
- Your fantasy anything league.
- A word you just made up, especially if it "means whatever you want it to mean." See WP:NFT and WP:NEO.
- Rumored Disney Channel shows/movies, or sequels to them. See Wikipedia is not a crystal ball.
- Your five-a-side pub soccer club.
- The sex practice involving excretory functions that you just made up.
- Anyone who's "the coolest person in the universe."
- Anyone who "Rokz your sockz."
- Anyone who is "the man, the myth, the legend."
- Anyone or anything that's "up and coming."
- Any article that begins, "It all started when..."
- Your girlfriend/boyfriend.
- Your teacher.
- Your cat.
- Your mom/dad.
- Your YouTube film.
- Your independent production company that makes YouTube films.
- Your high school film class film.
- Your fansite that you just started last week.
- The fantasy novel that you haven't finished writing yet.
- Your search engine optimization company.
Notice how many of these have the word "your" in them? See Wikipedia:Conflict of interest.