Bucks coach Scott Skiles has called out Charlie Villanueva for posting on his Twitter account during halftime of Sunday's game against the Celtics.

"We made a point to Charlie and the team that it's nothing we ever want to happen again," Skiles said after practice Tuesday. "You know, (we) don't want to blow it out of proportion. But anything that gives the impression that we're not serious and focused at all times is not the correct way we want to go about our business."

Villanueva posted the following message on his account during halftime of the game:

"In da locker room, snuck to post my twitt. We're playing the Celtics, tie ball game at da half. Coach wants more toughness. I gotta step up."

Villanueva didn't think it was an issue at the time, but understands why Skiles would be upset.

"That wasn't the case at all, because I was very into the game -- as you can tell, the way I played," Villanueva said of being distracted. "But you can interpret it two different ways. You can look at it like, 'OK, he's definitely going to step up' versus, 'Oh, he's really not into the game, he's not paying attention.' But that wasn't the case at all. That wasn't my intention at all."