This Taylor Swift guitar really went under the hammer at auction.

A mystery buyer is going viral for reportedly coughing up $4,000 to buy a signed Taylor Swift guitar at a Texas charity auction — just to immediately smash it up with a hammer.

The white-haired man obliterated the “Shake It Off” singer’s old instrument at the Ellis County WildGame Dinner in Waxahachie, just outside of Dallas, on Saturday night, according to footage posted on social media.

The clip, which quickly started going viral, captured the unidentified man grinning as he slowly made his way up to the stage where he was given the hammer and then the guitar.

Holding the instrument up in one hand, he was filmed repeatedly pummeling the guitar as the crowd cheered loudly.

The man then raised the instrument over his head and looked as if he was going to follow shouted requests and smash it on the ground — just to instead walk off with it, with the auctioneer laughing with him over the loudspeaker.

The footage doesn’t show what led up to the guitar-smashing antics or why he bought it.

Speculation was rife on social media that the chaos may have been tied to politics after the 34-year-old pop star recently revealed she would be voting for Vice President Kamala Harris in the upcoming presidential election.

However, it wasn’t immediately clear if the man was a Donald Trump supporter.

Trump, on his part, has repeatedly trashed the superstar — and took to his Truth Social platform as recently as last week to declare: “I hate Taylor Swift!”

Meanwhile, organizers of the charity event took to Facebook last week to advertise Swift’s autographed guitar as an auction item, describing the upcoming bidding as “once in a life time opportunity.”

Other auction items included a “trained Labrador hunting partner,” an “exotic ram hunt,” a five day black bear hunt and a smoked rib eye dinner party.