Ghostly encounters at my daycare.

I work at a local daycare, part time after school gig,  and some pretty weird things go on there.  i was washing the dishes one night while my coworker waited for the last kids parents to get there to pick him up. behind me was the door to the kitchen which was closed, the fridge, and the stove i heard the door open and without turning around i said ¨what can i do ya for¨ thinking it was my coworker, a child giggled and then the fridge opened so i said ¨hey buddy go back out to the lobby for me¨ still keeping my eyes to my work i heard him giggle again so i yelled to my coworker ¨Hey! can you come get him im busy at the moment!¨ i could feel him watching me and i heard from down the hall ¨what do you mean hes right here¨ i whipped around and no one was therebut the door was open and the fridge was open, i close the fridge and go out to the lobby ¨was he just in the kitchen with me?¨ and my coworker looks at me and says ¨no hes been with me the entire time. why?¨ i explained to her the situation when the door to the kitchen slammed shut.    needless to say neither of us went down the hall the rest of the time we were there.