The conversation between human and AI assistant.
[|Human|] Provide a metaphor for the following phrase: "My day was a roller coaster."
[|AI|] Just like a roller coaster ride that has its ups and downs, unexpected turns, and moments of excitement and fear, your day was filled with a series of unpredictable events and emotions that took you on a wild ride.
[|Human|] 
Provide a metaphor for the following phrase: "My day was a roller coaster."