Usually I have problems with giving SpongeBob Episodes a 10 because of the classic Double Episode format. In this case I'd give both episodes AT LEAST a 9 and both are just hilarious and memorable. I think especially Chocolate with Nuts is one of the most well known and liked SpongeBob episode while Mermaidman and Barnacleboy V is one of my personal favorites.
10/10 double Episode.
10/10 double Episode.