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.