A police instructor accused of sexually assaulting two women colleagues claimed they were hostile towards him because he refused to join in their sexual banter.
He claimed they brought magazines advertising sex toys into the staff room at Hendon training college and discussed which ones they preferred.
Pc Steven Minney, 39, said: "They sought to enmesh people in the conversation. Because I didn't play that game made them regard me as an opponent." Minney described the behaviour of one of the women at a Christmas party, Harrow Crown Court heard.
He said: "She removed her bra, waved it around and threw it around the table." Shortly afterwards, he said he saw her having a photograph taken of a tattoo on her buttocks and she pulled up her top in time to the music, exposing her breasts.
"It was extremely embarrassing with kids sitting 10 feet away," he added.
Minney denies five charges of indecent assault. The case continues.