I Just Can't Stay Out

EXCLUSIVE

Gucci Mane wastes no time ... He's back behind bars -- exactly ONE DAY after being released from jail -- TMZ has learned.

Mane was locked up on March 26 after allegedly assaulting a man with a bottle in an Atlanta nightclub. A judge initially denied the rapper bail. The judge then softened and two days ago set bail at $75,000.

Good news for Mane -- he was sprung from the pokey yesterday.

Bad news for Mane -- he was re-arrested today for a probation violation.

Sorta good news for Mane -- we hear Saturday is movie night in the pokey.