The memory of making a mistake like walking into the wrong restroom while drunk and feeling embarrassed is not sweet by any means and is more likely to be a nightmare.
Consider the statement "I can recall a time where I was very drunk at a wedding and I walked into the womans rest room and my face went so red I couldnt stand it". Is the statement "The time I was really drunk at a wedding and walked into the women's restroom leading to my face going red was one of the sweetest memories of my life." false? Yes/no/unknown