91-year old museum visitor fills in crossword puzzle that's actually a piece of modern art.

The wave of criminal shenanigans by elderly people has hit the museum world.

Case in point: An elderly 91-year old German woman recently visiting Nuremberg’s Neues Museum saw a blank crossword puzzle on a wall, beside it which had a sign saying "Insert words."

Maybe it was age talking or a stunning susceptibility to do as signs command, but the 91-year old threw caution to the wind and proceeded to fill in the crossword puzzle with an abundance of words. The small problem was that the crossword puzzle was actually modern artist Arthur Köpcke's 1977 creation "Reading work-piece," valued at everyday affordable price of $90,000.

"The lady told us she had taken the notes as an invitation to complete the crossword," a police spokesman said, according to The Telegraph. True. You can't deny the allure of a good crossword puzzle invitation. It's like Tinder for the elderly.

The Telegaph also added, "If the museum didn’t want people to follow the artist’s instructions, they should put up a sign to make that clear, she told police."

Grade-A sass from a 91-year old grandma who gives no you-know-whats at this point. She's thisclose to doodling all over Picasso's Guernica any day now.