As teachers, I'm sure, we've all been called "mom" more times than we can count, by our students. I always take it as a compliment. They are comfortable enough around me that they can call me mom without thinking about it.
However...one of my cutie patooties turned to me today and said "Grandma?" What?!?! I'm only 26! Where did grandma come from?? I must have looked appalled because the poor thing got all flustered: "I mean...I mean...I'm sorry!" He's a great kid so I just kinda busted him up about it and we both had a good laugh. I'm still shaking my head about it though....grandma...sheesh.