Back in my day, we lived above ground, where it was non nucleur contaminated
or
Back in my day, we were alive (I guessed this would be said in a afterlife, if one exists)
or
Back in my day, we wouldnt have a 99.9% chance of getting mugged/stabbed/destoyed by a gang of 4 year olds at least 6 times in a year.
OR
Back in my day, cod 6 was the latest cod
OR
Back in my day, my deadly skill was JOGGING?
...Ill stop now