The phrase refers to costume decisions that mix parts of the horror movie sequence, primarily that includes the character Jason Voorhees and the themes related to Friday the Thirteenth, with the custom of dressing up for Halloween. These ensembles usually incorporate hockey masks, tattered clothes, and simulated weaponry to evoke the enduring slasher picture, appropriate for Halloween festivities.
Such thematic apparel offers a singular and recognizable possibility for Halloween celebrations, drawing upon a well-established and culturally vital horror franchise. The visible influence and widespread recognition of the character and related imagery contribute to its recognition as a dressing up selection. This method to Halloween dressing affords a definite different to extra standard or whimsical themes.