Looking on the internet deeply has found these results:

I was in my fifteens is the most popular phrase on the web.

I was at my fifteens 10 results on the web	I was in my fifteens 117 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
It doesn't look like this phrase is very popular! The search could not find any examples on the internet.	I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday.??????3000?. On summer vacation of this�... 2015?7?18? ... I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday. Pride and Prejudice is a�... But The Old Man and the Sea is the one that left the deepest impression on me. I first read this book when I was in my fifteens. And now I remember it just as well�... 5 days ago ... I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday. Pride and Prejudice is a�...

I was at my fifteens

10 results on the web

I was in my fifteens

117 results on the web

More popular!

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday.??????3000?. On summer vacation of this�...
2015?7?18? ... I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday. Pride and Prejudice is a�...
But The Old Man and the Sea is the one that left the deepest impression on me. I first read this book when I was in my fifteens. And now I remember it just as well�...
5 days ago ... I first read this book when I was in my fifteens. And now I remember it just as well as if I had read it yesterday. Pride and Prejudice is a�...