GAK! IT'S NICK AT THE KNICK, AND THE SLIME WILL BE SLICK.(PREVIEW)

Byline: KATHLEEN DOOLEY Staff writer

Dress for a mess and definitely don't wear Sunday best. Bring a flashlight. Wear orange or green, perhaps a green or orange frizzy wig. Design a clever sign that says, ``Pick Me.'' Do the chicken dance. Paint your face with green slime or ``Gak.'' Finally, at the top of your lungs, shout, ``I love green slime.''

We can't guarantee you'll get picked to participate in Nickelodeon's Mega Mess-A-Mania Live Tour oozing into Knickerbocker Arena Sunday but at least you'll have fun.

At least 80 folks from the audience will get to throw Gak pies and slime each other during the two-hour show. Bob Brandenburg will be there too, …