Pro Sheith
A person who ships sheith and claims to be a pro shipper, but harasses people who ship things that interfere with Sheith such as Adashi, Curtashi and Klance.
Person 1: Oh, they're pro sheith
Person 2: Are you an anti?
Person 1: No, that means they hate curtashis.
Person 2: Are you an anti?
Person 1: No, that means they hate curtashis.