抖腿在英语中叫作fidgeting。这个词源于中世纪英语中的"fidjan"，意思是"摇晃"或"百无聊赖"。例如：

She couldn't sit still, constantly fidgeting in her chair. 她坐不住，总是在椅子上抖腿。

He fidgets with his pencil while he's thinking. 他在思考时玩弄着铅笔。

She's always fidgeting with her hair. 她总是把头发捻来捻去。