I saw him in the distance, as the train went speeding by, 
A shivery little fellow standing in the sun to dry. 
And a little pile of clothing very near him I could see: 
He was owner of a gladness that had once belonged to me. 
I have shivered as he shivered, I have dried the way he dried, 
I've stood naked in God's sunshine with my garments at my side; 
And I thought as I beheld him, of the many weary men 
Who would like to go in swimming as a little boy again. 
 
I saw him scarce a moment, yet I knew his lips were blue 
And I knew his teeth were chattering just as mine were wont to do; 
And I knew his merry playmates in the pond were splashing still; 
I could tell how much he envied all the boys that never chill; 
And throughout that lonesome journey, I kept living o'er and o'er 
The joys of going swimming when no bathing suits we wore; 
I was with that little fellow, standing chattering in the sun; 
I was sharing in his shivers and a partner of his fun. 
 
Back to me there came the pictures that I never shall forget 
When I dared not travel homewards if my shock of hair was wet, 
When I did my brief undressing under fine and friendly trees 
In the days before convention rigged us up in b.v.d's. 
And I dived for stones and metal on the mill pond's muddy floor, 
Then stood naked in the sunshine till my blood grew warm once more. 
I was back again, a youngster, in those golden days of old, 
When my teeth were wont to chatter and my lips were blue with cold.
Edgar Albert Guest
http://www.poemhunter.com/poem/real-swimming/