For a start we are all blessed to enter that amazing historical stadium, we don't know how lucky we are and probably deep down we all take for granted the size of our club and the history associated with it, we are probablhy in the top 5-10% of football fans world wide to experience nights like Parma, Leipzig to name but two, and so on, and for that reason I tap the frame on the way out as no matter who we are or what we are, one thing is 100% certain, one day we will walk out there and never ever return and if that was Tuesday night I have shown my appreciation by tapping the frame.
PS I hope Tuesday wasn't my last but you get my drift.
PPS - Birthday caord p1sh to some and I respect that.