Was it meant to be frozen, and was just in the cold part of the fridge, or is it a shelf-stable food that can sit on the shelf without spoiling? If it is shelf-stable then yes, it is safe to eat. The date is only a best-by date, there is no such thing as an expiry date. If the food was meant to be frozen and is not, then absolutely do not eat that.

I don't think so.

5 months!!, I would'nt risk it!

maybe