What are the legalities/Y! rules involved in parodying portions of other Y! member's 360 pages?

I recently copied & then changed (sent the text thru a 'ebonics' translator) someone's (Y! ID: worlds_of_thomas_lance) blog entry & made it my blog entry. The entry was a story, the Y! member is a writer & the story was preceeded with a warning not to infringe the his copyright. It's obvious parody & was not even meant to be 'mean spirited', just funny in a stupid way. I even left a message on their 360 page directing them to my 360. People got bent outta shape about it so I'm asking...Did I break the law? Did I violate Y! rules? (haven't really checked those out to be honest) How thin skinned can people be?