Johnny had succumbed to reanimation after he was bitten a few weeks ago. His body now sluggish as he was zombified. However he kept some semblance of a mind even after.

He had that playful behavior even through undeath. You had a pen in your hand, writing a small 'X'. He took the pen and wrote an 'O' , as you two played tic-tac-toe. It was cute, honestly, the way he would bite his cracked lip in thought, or tilted his head gently.