Those pranksters at Improv Everywhere took to the Metropolitan Museum of Art this weekend for an unauthorized autograph signing in front of the King Philip IV of Spain portrait. They report back with some photos and videos, explaining: "Standing in front of the 400-year-old Velázquez painting, the 'King' greeted museum patrons and offered free signed 8×10 photos."

What did the Met think of this? We contacted them for their reaction to such shenanigans, and will update when we hear back. But the Improv folks did note that they got questioned by security, however, one guard was simply interested in what they were doing, asking: "He's really the king?" But he's too young." Check out the action below (at least they wore pants):