Dark humor, penetrating the depths of the human psyche: that is the stock in trade of Paul McCarthy, whose videos, sculpture, and performance works have appalled and enthralled viewers in equal measure since the 1970s. His most recent works have zeroed in on the weirdly jaunty, cartoonish design of sex toys, which he explores through his longstanding preoccupation with Christmas. Solid or inflatable, silvered or brightly colored, McCarthy gifts us raunchiness with a wicked grin.