Dishrack Cannibal

A person who takes recently washed (or dirty but re-useable) kitchen utensils or crockery from a dish rack rather than taking new ones out of the drawer or washing their own.

Zak: There are no clean teaspoons in the cutlery drawer...
Sara: Just use a dirty one from the dishrack - it's all tea!
Zak: Eww gross! You're such a dishrack cannibal!