High school sex was a
bad news/ good news story.
Bad news it was difficult on the 1st pop to hold off very long.
Good news was at late teens, always ready for 2nd (and 3rd, 4th) pop in a
couple of minutes.
Also, during those years the pill wasn't available so had to use condoms. Buying condoms was always an embarrassment as they were only sold at drug stores and you had to hope that you didn't know the person at the counter (they were never displayed and you had to ask by name and the counter clerk would reach under the counter to get you condoms.)
Then when you get into your later years it reversed to a
good news/bad news story,
Good news was you can hold off as long as you want before 1st pop.
Bad news is you weren't ready for a 2nd pop for
a couple of days.