Casey Anthony, the 25-year-old accused of murdering her daughter Caylee, boasted about her ability to lie, said a witness on Thursday.

Melissa England, who met Anthony during the July 4 weekend in 2008, recalled a time when Anthony lied to someone on the phone, saying that she couldn’t pick them up because her tire was flat.

Afterwards, Anthony “threw the phone on the dashboard and said, ‘Oh my God, I’m such a good liar,’” England told the jurors on day three of the murder trial.

Anthony was seen shaking her head during England’s remarks.

But England also said that during a July 3, 2008 dinner, Anthony shared that she was considering to move to an area with a better school system so Caylee “could get a better education.”

However, witnesses have all testified that Casey Anthony told them she worked at Universal Studios and she often said Caylee was with a nanny. Both the prosecution and defense confirmed that Anthony was lying about her job and her daughter being with a nanny.

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The case to portray Anthony as a party girl with poor moral values is building. There is evidence that she hit the night clubs and partied after her 2-year-old daughter Caylee went missing, and that she appeared not the slightest disturbed by the disappearance of her child.

Ex-boyfriend Ricardo Morales on Thursday testified that she picked him up at the airport on July 15, 2008, after he visited Puerto Rico. He said she never seemed sad or upset at that time.

“She was the same as she always was,” Morales said. “Happy. Smiling. Just as usual. Same Casey.”

That same day, Cindy Anthony, Casey Anthony’s mother, reported her granddaughter missing in a 911 call. Cindy had also said in that call that Casey’s car smelled like someone dead was in it.

One of the biggest unresolved issues in the case is why no one reported Caylee missing until a month later. Caylee was last seen on June 16, 2008. The defense claims that Caylee accidentally drowned in her grandparents’ pool and that Casey had kept the death a secret because she has a strange quirk caused by being sexually abused by her father. Defense attorney Jose Baez claims that Casey’s father, George Anthony, and Casey found the body of Caylee in the pool and decided to keep it a secret and dispose the body.

George Anthony has denied ever sexually abusing Casey or that he found Caylee’s body in the pool.

The prosecution, however, says Caylee died from three pieces of duct tape placed over her nose and mouth. Coincidentally, the tape used on Caylee is the same type found on one of the gas cans in Anthony’s shed.

A medical examine did not reveal what caused Caylee’s death, but ruled that the toddler’s death was a homicide by undetermined means.

Casey Anthony faces seven charges, including first degree murder, providing false information to law enforcement, aggravated child abuse, and aggravated manslaughter of a child. If convicted, she could face the death penalty.