have a sixpenny bit up one’s backside
English edit
Etymology edit
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.).
Verb edit
have a sixpenny bit up one's backside (third-person singular simple present has a sixpenny bit up one's backside, present participle having a sixpenny bit up one's backside, simple past and past participle had a sixpenny bit up one's backside)