WHAT DO THE FOLLOWING LETTERS HAVE IN COMMON RIDDLES WITH ANSWERS TO SOLVE - PUZZLES & BRAIN TEASERS

2 Did you answer this riddle correctly?
YES  NO  

Six Dozen Dozen Did you answer this riddle correctly?
YES  NO  

$1.19 Did you answer this riddle correctly?
YES  NO  

A river Did you answer this riddle correctly?
YES  NO  

December 31. Let's assume that December 31 is my correct birthday. Now let's also assume that I am 21 and that today is January 1st (the day after my birthday). That would mean that the day before yesterday (December 30) I would be 20. That fits the riddle so far, but here comes the tricky part!
Let's also say that the current year is 2013. So to clarify, today is January 1st 2013. Next year would be 2014, and the trick is that I will have two more birthdays by the end of 2014, one on December 31st 2013 (22 years old) and one on December 31st 2014 (23 years old).So in 2014, the year after 2013, I will actually turn 23! It's a tricky riddle. Best way to go about it is to use trial and error with all the answers and to also keep an open mind about what "next year" means. Did you answer this riddle correctly?
YES  NO  

Add on an S Did you answer this riddle correctly?
YES  NO  

Time Did you answer this riddle correctly?
YES  NO  

An odometer Did you answer this riddle correctly?
YES  NO  

Popcorn Did you answer this riddle correctly?
YES  NO  

Coffin Did you answer this riddle correctly?
YES  NO  

QT. Did you answer this riddle correctly?
YES  NO  

SWIMS. If you turn the word upside down its the same word (the W and M flip to resemble themselves). Did you answer this riddle correctly?
YES  NO  

Dozens. Did you answer this riddle correctly?
YES  NO  

A Ruler. Did you answer this riddle correctly?
YES  NO  

Aunt Did you answer this riddle correctly?
YES  NO