Question: What was Deebo in jail for? I know at the beginning of the movie it shows a flashback with the police showing up after the fight, but why would they arrest him?
Answer: I believe that Deebo was arrested for assaulting Felicia. Debbie (her sister) would've been a witness. The previous answer is also plausible. Theft, assault, menacing.
Chosen answer: It's not stated, but most likely after everyone witnessed someone finally standing up to Deebo that people gained the courage to testify against him. Most likely breaking and entering charges (as he did at Stanley's house) and assault.
Carl Missouri