DOWNEY ON ALERT

PARANOID? SAYS WHO?

Robert Downey Jr., in LA on a supervised day trip from his Malibu rehab, Promises, looked haggard and twitchy at chic Café Cuvee -- and insisted on facing the street at a sidewalk table, even though passersby kept ogling him! Downey's eyes darted nervously as he ate from a salad bowl in his lap -- but when a manager suggested he slide around with his back to a wall and they'd put two tables in front of him for more eating room, Downey got agitated and said, "NO! . . . That way I wouldn't be able to move fast if something went down!" (What's goin' down-ey, dude?)