Anal copulation, esp. between a man & woman.

This term alludes to the deep-rooted historical popularity of anal sex among the Irish in particular, & Upland Britons in general. The main cause of this predeliction is the 'Irish Curse' - the small size of the Celtic Penis which results from evolutionary contraction to conserve heat (as per Allen's Rule) in the damp-cold climate characteristic of the British Uplands section of the British Insular biogeographic province in the Euro-Siberian (or Palaearctic) ecoregion. This anatomical peculiarity is further exacerbated through contrast with the bulky & muscular working-class Celtic Nordic-Iranian frame. Thus the Irishman prefers to quench his voracious sexual appetite in the narrow & tight anus of the Hibernian female.

Likewise, the closely related 'Punjabi Curse' & 'Hindustani Curse