at least they make me laugh

Today, I was teaching short i and the 'it' family words (fit, knit, hit, bit..).  I'm hoping not to hear sh -it or t -it.  I was expecting a giggle if someone said sp-it.  As I'm writing the words on the board, I decide to call on one last student.  I get, cl -it.  Normally when a kid makes up a word, pretending it's a real word, I ask if they know what it means or can use it in a sentence.  In this case, I didn't want to ask.  I decided to move on, while laughing inside.