How to Argue With an Elementary-School-Aged Child (And Lose) #49

P=Parent
C=Child

C: Five and twelve quarters?
P: What are you talking about?
C: I think it's five and twelve quarters?
P: What do you mean, five and twelve quarters?
C: That's my age! Right?
P: Oh, no... you were Five and three quarters, now you're Five and eleven-twelfths!
C: Oh yeah. Eleven-twelfths-quarters...