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

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