Clicking Your Tongue

Last week, two of my kiddos were having a very interesting debate.  You know the sound from clicking your tongue?  They were debating how to spell that sound.  Was one of them trying to incorporate  that "word" into a story they were writing?  I have know idea how the conversation started.  One of the kiddos figures the "word" would end with and "a" sound, while the other kiddo is sure it ends in a "ck".  



What kind of crazy discussions do your children have?  Or is it just mine?