In a moment that reportedly ended up costing a person portraying Mr Met their job - but effectively summed up the team's disappointing start - the Mets' mascot gave the finger to some fans at Citi Field on Wednesday.
It was caught on video and quickly went viral, resulting in an apology from the 23-28 team.
"We apologise for the inappropriate action of this employee," the Mets said. "We do not condone this type of behaviour. We are dealing with this matter internally."
The inappropriate gesture happened during a 7-1 home loss the Brewers, the latest setback for an injury-plagued team that began the season with World Series aspirations. A fan named Anthony De Lucia filmed the moment and uploaded it to his Twitter account.
De Lucia said that he and his friends "didn't even say a word" and were "just reaching over for a high five" from Mr Met. The mascot's image was introduced during the team's inaugural season in 1962, and in 1964, became the first in MLB to take live-action form.