'Boys from the Blackstuff' :

https://en.wikipedia.org/wiki/Boys_from_the_Blackstuff

'American Red Cross – Our boys need SOX' :

https://propagandaposterstore.com/product/american-red-cross...

'Old boy' :

https://dictionary.cambridge.org/dictionary/english/old-boy

edit - could also just go straight to the entry for 'boy' :

'a male child or, more generally, a male of any age'

https://dictionary.cambridge.org/dictionary/english/boy