Well, is not a secret anymore!

I was there... I followed the fly, it was acting weird. Then the fly stopped on this tree trunk and started to jump in a weird way. She looked at the empty snail shell for a few minutes, then flight away. It was fishy, very fishy! Why the fly was jumping all around the empty snail shell? Does the snail was really empty? Were that a type of insect morse code? and if that's the case, what was the message and who go it?
Maybe all those empty shells in my yard are spies, maybe there's a big invasion going on and we are unaware of it... maybe the fly was just doing its daily fitness routine.... maybe I'm over thinking... Who knows!