What is the WEIRDEST thing 你 have ever done in public???

I was at the grocery store and I saw my grandpa and yelled " 嘿 grandpa, 嘿 grandpa, grandpa it's me Sam!" I ran over there to hug him and he turned around and 说 " do I know you?"
It wasn't my grandpa, it was an old lady!
XD I was only 9 years old!