A MAN accused of seriously assaulting an Adelaide taxi driver has landed himself in further hot water over his decision to "moon'' reporters after leaving Port Adelaide Magistrates Court.

Christopher Farinola, 20, of North Haven, pulled a T-shirt over his head to hide his face then bared his backside after leaving court on Tuesday.

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He did not speak but spat out of a car window twice as he drove away.

Police today spoke with Farinola over the incident and reported him for disorderly behaviour.

He will be summoned to appear in court on that matter at a later date.

Farinola is accused with three other men of the aggravated assault on cabbie Manbir Singh, 24, at Henely Beach.

Mr Singh suffered a fractured eye socket and has partially lost sight in an eye.

Co-accused Bradley Field, 20, also appeared for the first time in Pt Adelaide Magistrates Court on Tuesday.

Two other men charged over the incident will appear on a date to be fixed.

Farinola was remanded to reappear on the assault matter in March.