Technology can help.
Take, for example, that classic Halloween accessory, the realistic festering wound. Former NASA employee Mark Rober has created an app that shows animations of moving, oozing innards.
Put your iOS or Android smartphone in a special fleshy case, add a carefully bloodied, ripped T-shirt and you have the iWound. There is also a moving eyeball outfit, and a new effect that makes it look like a hand is ripping out your guts from behind. More