The daddy, princess and little man play school a lot at the moment. The daddy is the teacher and when they answer correct they get a tick like this followed by the daddy saying "kerching".
Nothing wrong in that really, is there....? Well, no but it has resulted in the little man not knowing a tick was called "tick".
Him and the daddy were playing a game together on the computer. An option on the screen appeared and a tick was needed. So the little man said:
"Look daddy, it's a kerching"!