"Crazy Thursday" is not a commonly used phrase in Engpsh. However, there is a similar phrase called "Black Thursday" which refers to the stock market crash of October 24, 1929, which marked the beginning of the Great Depression.
Another phrase that is commonly used is "Throwback Thursday" which is used on social media platforms and refers to posting old photos or memories on Thursdays.
Example:
"I love Throwback Thursday, it's always fun to look back at old memories" (我喜欢疯狂星期四，回顾旧时光总是很有趣)
"I'm so excited for Throwback Thursday this week, I'll be posting some old family photos" (我很期待这个星期的疯狂星期四，我会发一些老家庭照片)