O'Neal and his children also stopped at Treadwell's Ice Cream, owner Tom Gould said.
"We saw him pull in," Gould said yesterday. "The whole crowd went nuts."
The gracious athlete posed for a photo with his children and the staff.
"It was fun to see him," Gould said. "He was very genuine, very nice and down-to-earth."
The Celtic arrived about 12:30 p.m. and spent about 20 minutes there.
"He was driving by and saw the sign," Gould said. "I wish I could say it was our world-famous ice cream. His kids saw the ice cream, so he pulled in."