"stop tittling me"

so I have this student who struggles with the /k/ sound and so one day when there was mad chaos in the line up while waiting for the bathroom I called up my little guy to ask what had happened... all he was saying was, "he is tittling me... he is tittling me... he is tittling me..." which written out is easier to understand than him shouting it in his tiny little voice. I had no idea what he was saying and kept asking, "What? He is hitting you? touching you?..." Finally he had to ACT OUT tickling so he could show me what he meant. It was then that I figured out what he meant and VERY sternly had to say to his friend, "WE DO NOT TICKLE OUR FRIENDS AT SCHOOL." It was SO hard not to laugh as I have never had to say something so ridiculous so sternly. Anyways I also figured out that I have to work with him on some speech therapy. So we are practicing the /k/ sound. It was great.