have a sixpenny bit up one’s backside

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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)

1. (slang, dated, Ireland) To be over the moon, to be very happy.
   • 1980, Ted Lewis, GBH, Sphere Books, →ISBN, page 174:

     ‘Eddie told me what you done […] Come in here earlier on like he’d got a sixpenny-bit up his backside.’