With the Celtics up on the Heat 48-35 midway through the second quarter, Jason Terry made a mistake.
After stealing the ball from Miami, Terry was stripped from behind by Dwyane Wade, and forced to defend a three-on-one in the other direction.
Then he made another mistake - he got in the way of a full-steam-ahead LeBron James, who received a lob pass from Norris Cole and dunked over Terry with authority.
James then stood over Terry long enough to earn himself a technical foul.
Terry hit the free throw.
That didn't bother James though, who took great pleasure in the dunk over the always-confident Terry.
"The fact that (the dunk) happened to J.T. made it that much sweeter… he talks too much," James said to ESPN's Brian Windhorst on Wednesday.
"I've had a chance to (review) it and it was one of my better ones… I'm glad it happened to him."
A few days before the two teams faced off, Terry made it known that the Heat streak meant nothing to him.
"Not really impressed with it or anything that they do," he said. "So, for me, it's more about what our team is doing and how we're coming together as a unit."
Even before the streak started, Terry had it out for the Heat.
"My mission is to kill; whether it's the Heat, whether it's the Lakers. Hopefully both. That's my mission, and that's what I'm here to do," he said prior to the start of the season.
Asked for any reaction to the dunk on Wednesday, Terry didn't have much to say this time.
"I'm not even commenting. No comment. Zero. I have none," Terry said. "A basketball play. My reaction was when the fans were cheering and I went up and knocked down the technical. That's a great reaction. Wasn't the first, won't be the last."
The two teams will meet once more in the regular season, in Miami, on April 12. If the last month or so is any indication, though, they could both see a heck of a lot more of each other later on.
And you can bet Terry and the C's won't forget James' satisfaction.