Fallen footballer O.J. Simpson is headed to trial in Sin City for alleged armed robbery -- but has The Juice now gotten into a scuffle with his own kid?!

According to the National Enquirer, Simpson had a nasty altercation with daughter Arnelle at his Florida home -- and she shoved him into a glass cupboard! The tab claims the two were fighting over O.J.'s girlfriend Christie Prody and her alleged drunken behavior. After Arnelle allegedly knocked O.J. to the ground, she called the cops.

When asked about the scuffle, O.J. replied, "Look at me -- I'm fine."

Click here to see the incident report.