The fan got a touchdown ball from K.J. Osborn after flipping off Giants wide receiver Isaiah Hodgins earlier in the Wild Card game.
Hodgins, 24, fired the Giants ahead with a late first-quarter touchdown, finding the pay dirt in his third straight appearance.
As the former sixth-round pick caught the ball for a 14-yard score, he slammed it into the ground in celebration.
Next, Hodgins took a few more steps toward the stands, seemingly shouting something to the spectators sitting in the front row.
One of the Vikings fans then showed him two middle fingers before the jubilant receiver walked away with teammates Lawrence Cager and Darius Slayton.
Toward the end of the first half, Osborn, 25, reached the same end zone to reduce New York’s lead to 17-14.
The third-year wide receiver then scampered toward the young fan who flipped the bird at Hodgins and handed him the ball he caught.
The two then had a brief chat before the fan — who wore Justin Jefferson’s No. 18 jersey and a Vikings beanie — patted Osborn on his helmet as he headed back to the field.
Later, Kayvon Thibodeaux further enraged the upset fans at U.S. Bank Stadium.
New York all but eliminated the NFC’s No. 3 seed from the NFL playoffs when Minnesota turned the ball over on their last possession of the game.
After the play, Thibodeaux celebrated by doing the Griddy dance on the Vikings’ logo.