A SHAMPOO boy who threatened to set his estranged lover's flat on fire and then humiliated her at work by inviting her to a cannabis party, signed a bond to keep the peace yesterday. Ip King-chung, 18, who was not legally represented, pleaded guilty before Magistrate Mr Michael Hill at Eastern Court to criminal intimidation. He was bound over in the sum of $300 on his own recognisance for a year. He admitted having made a threatening call to Ms Cheung Hing-tong, 21, at dawn on December 8, less than a day after she had split up with him. The court heard that Ms Cheung had cohabited with Ip at his Pokfulam Village flat since last May, but had moved back to live with her family at Lai Tak Tsuen following their estrangement. At about 6 pm on the same day, Ip went to Ms Cheung's office in Central and shouted loudly at her, saying she could return to his place for cannabis. Ms Cheung reported the matter to the police.