you call a night club by the name you knew it as and the kids give you a very wierd look.
you hear a re-release of a song by an original artist and the kids say it wasnt as good as the original (which was the cover version) or the cover version or the follow up cover version
you laugh at the fashions the kids where as you cant belive that what you were wearing has come back again.
you can remember what you were doing 30 years ago at some significant event
you cant remember where you put your keys 10 minutes ago
OHhh Thermo, so right you are and Im only forty
you remember the cold war and try to explain it to the kids only to get told oh we did that in history
you spend your saturday nights on forums like this!