A miserable person. Term comes from the miserable tone of voice the Sorting Hat in Harry Potter uses.
Tom: I don't think we should listen till Christmas music until 2 days before Christmas.
Rebecca: Tom is such a Sorting Hat.
The Urban Dictionary Mug
One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.
Buy the mug