The night of 31 October, the eve of All Saints' Day. Shagoween is thought to be associated with the Celtic festival Samhain, when ghosts and spirits were believed to be abroad.
"shag-o-ween" ; the british holiday of death, much like its popular American counterpart "halloween"
commonly celebrated amongst british teenagers and children around october 31st annualy.
"hey kids, what are you dressing up for this shagoween?"
"Nice shagoween costume stacey! very spooky!"