Feeling like you could kill someone in the morning until you’ve had your morning coffee? Join the club. Dexter doesn’t need caffeine withdrawal to go on a killing spree, so embrace your beverage with a Dexter Heat Changing Mug. The mug features lovely blood splatters all over until your pour in your hot beverage and they slowly disappear into the night like a bloodstain pattern analyst for the Miami Metro Police Department who moonlights as a serial killer. Officially licensed.