How the hell did Kelly get a neck tattoo? (Bone temple)
At first I thought the tattoo may have just been an oversight in casting, but the actress who plays Kelly doesn't actually have a neck tattoo, so it was an intentional addition for the character.
She's supposed to be in her 20s and the film is set 28 years after the outbreak, so she definitely didn't get it done beforehand, and the Jimmies don't exactly seem like they'd ever be in a situation where tattooing equipment would be available, let alone a situation where someone would be willing and able to actually tattoo one of them with a steady hand, or even in a situation where the tat could heal properly at all.
Obviously stick & pokes exist, but again that seems unlikely for a tattoo like the one she has, especially in the circumstances of the film.
Just seems like a really odd and nonsensical visual decision for the character.