Mouse Cheese Water Letters????

Today during writing time, we were revising our work to show our intent. "What kind of story do you want to write?" Is it funny? Sad? Happy? Serious? Scary? 

I leaned in to confer with this student. When I asked her to read me her work she said: "ms. Campi! I revised it to make it hilarious!" 

To which I responded "wow great! Show me what you did." 

She showed me her work where she mentioned she erased her original writing to make it funny.........

"I ate chocolate bar the bar tasted like chocolate chip cookies." 

So far so good.... Then.....

"It tasted like mouse cheese water letters" 

She sits there smiling and waiting for me to laugh. I asked her what mouse cheese water letters were.... She had no idea.      -_____-