Mel B's ex-husband has denied attacking a three-year-old autistic boy claiming he was only intervening to protect another child.
Jimmy Gulzar, 35, showed London's Horseferry Road Magistrates Court how he slapped the boy on his behind but claimed it was "not a hard smack".
His mother claims Gulzar "roared" with anger as he lashed out. Gulzar claims he did nothing wrong and denies common assault.
He'd gone to London Zoo with friends and relatives, including his mother, who were visiting from Holland on September 1 last year. He claimed a two-year-old girl he was looking after was attacked by the three-year-old boy near a Jeep ride close to the lion enclosure.
Gulzar said: "I saw the little boy coming out of his car, going up to her and pushing her with both hands on her chest so her head went forward and then back.
"She fell and hit her head. He was pushing her very hard, he looked like he was five or six-years' -old, he was way bigger than her."
He denies pulling the boy out of the ride by his arm. He also denies that he had wanted to punish the boy.
Gulzar added that he walked by the woman soon afterwards but she did not see him as she was talking on her mobile phone.
He said: "I heard her saying on a mobile phone 'Jimmy Gulzar, Jimmy Gulzar, Jimmy Gulzar' three times. Something said to me why is this woman on the phone repeating my name."
The court has already heard that the boy's mother received a payment of £1,000 (€15,00) from a Sunday newspaper for a story about the incident. The case continues.