let's say you are raised in a home where drinking in a home is wrong but you never actually start drinking til after you're 21 yet all of your friends began drinking much earlier.
or, maybe your mother dressed you when you were wrong so you didn't have the chance to find clothes you really liked but only now do you find some joy in getting clothes that you really like (parental lag? or, parental drag?)
or, you put off college and now you're back in school and it's tough but you can do it and everyone else is younger and doing alright
or, you know people that watch tv all the time but you find tv mostly boring, so are you lagging behind or are they