An Ice-Cream Bowl Story is a long-winded anecdote, which ends in a pretty crap punchline/anti-climax.
Originating in a secondary school in Northern England in 2003 when one girl spent over quarter of an hour telling a story about the ideal size of a bowl for ice-cream.
Boy: ...so in the end we all went home.
Girl: That's such an Ice-Cream Bowl Story
1) a literal bowl of vanilla ice cream that is halfway melted
2) (slang) another way to say someone or something is terrible
1) I just finished eating my half melted bowl of vanilla ice cream
2) When will we have a time where we don't have a half melted bowl of vanilla ice cream under president