toy with

漫不经心地摆弄, 轻率地对待, 不十分认真地考虑

例句与用法：

While she was talking to me, she toyed with a pencil.

她一边和我说话，一边摆弄着一支铅笔。

She toy with her pencil while she listen on the phone.

她一边听电话，一边耍铅笔玩。