Bobby Valentine and the agent for Cliff Floyd took huge verbal swipes at each other last night.

It was all because Tuesday, Floyd left a telephone conversation with Valentine thinking he was on the All-Star team and proceeded to buy nearly $16,000 worth of plane tickets to Seattle for friends and family.

“Once again, Bobby Valentine has conclusively proven he is what everybody believes him to be,” Floyd’s agent Seth Levinson said yesterday.

When asked what that was, Levinson said, “I don’t think that takes a lot of imagination.”

Valentine retorted, “No one said there was a problem, except for a very dishonest agent named Levinson.”

Just like last week’s Darryl Hamilton feud, this is another he said-he said episode. This is how Levinson remembers it.

“Cliff, upon relying on Bobby Valentine’s promise that he had made the All-Star team, purchased $16,000 in plane tickets for family and friends,” said Levinson, who is also the agent for Mets Todd Zeile and Steve Trachsel. “It would be foolish and unreasonable of anyone to think we would buy $16,000 worth of tickets if he only had a chance to make the team. The tickets are a smoking gun.”

Credit card receipts for the tickets, which were obtained by The Post, showed they were bought on Tuesday at 4:29 p.m.

But it is Valentine’s contention that Levinson is the one in the wrong. First off, Valentine said he tried to reach Floyd – through intermediaries of Levinson’s – on several occasions before Monday to find out if Floyd were interested in playing on the All-Star team.

Floyd – who entered yesterday hitting .339 with 21 homers and 70 RBIs – had been quoted as saying he wasn’t interested in playing for Valentine. This all came about after the two warred through the press with Floyd referring to Valentine as “the stupidest manager in baseball.”

“If he is out $16,000, then Seth should give him that money for being negligent at his job,” Valentine said. “Seth Levinson was told over a week ago that I needed to talk to him to find out whether or not [Floyd] was going to present an embarrassing situation if, in fact, he was going to take himself off the team. Seth Levinson decided not to do that. At the last moment, I called Cliff to find out if he wanted to go, at which point he supposedly got all excited.”

Valentine said Floyd just missed making the team. Floyd thought he was on it.

“I wanted to apologize to him, and he said he wanted to make certain that this was behind us and was not going to be a media event,” Floyd told ESPN. “His exact words were, ‘It’s against league rules to announce today and I’m not supposed to tell you, but congratulations, you’re on the team.”

Valentine said he made no such promise to Floyd. But Levinson is blaming Valentine. Neither Valentine nor Levinson spoke highly of each other about a feud that dates back to Levinson client Todd Hundley’s days with the Mets.

“If Cliff is out any money, I know for sure where he should get it,” Valentine said.

Valentine said he doesn’t think this will hurt his relationship with either Zeile or Trachsel. He said he doesn’t deal with agents.