Gee, Dave, who are the flowers for?

David Letterman, whose private “affairs” became very public last year when he became a blackmail target, carried a bou quet into his TriBeCa loft yesterday, then went back to his car for a toy truck.

The flowers might have been for wife Regina Lasko, and the truck for their 6-year-old son, Harry, but Dave was wasn’t talking when asked about the gifts.

“How come you’re working on Sunday?” he fired back at our shutterbug, changing the subject.