If you slow down on Manhattan’s West Side Highway and squint you can see Donald Trump’s “micro penis.”

A sneaky vandal defaced the Donald J. Trump adopt-a-highway sign on the southbound Henry Hudson Parkway before the Boat Basin exit by taping the words “MICRO PENIS” below Trump’s name.

Trump bragged about the size of his endowment at a Republican debate in Detroit after Marco Rubio suggested he had “small hands.”

“Look at those hands, are they small hands?” Trump said on March 4.

“And, he referred to my hands — ‘if they’re small, something else must be small.’ I guarantee you there’s no problem. I guarantee.”