Only mead I ever dumped was a coffee mead. It was a 1-gallon test batch and even after 3 years was undrinkable. Just absolutely nasty, astringent is what I remember about it, but your mileage may vary. Oh, and I do love coffee, just so you know that wasn't the reason.
Bender: (singing) Hush, little brewski,
Don't you leak,
Daddy wants to drink for at least a week.
Primary 1: Empty!
Secondary 1: Hoppin' Mad Amber
Secondary 2: EMPTY!
Tap 1: Dirty Rats' House Amber V2.0
Tap 2: Irish Red Black Cherry Ale
Tap 3: Nut Brown Ale
Tap 4: Cheesefoods' Vanilla Caramel Cream Ale
Tap 6: Vanilla Cream Soda
On Deck: Not sure yet?