Unfortunately The P.C. Brigade might take offence at the term "boy"
From Wiki...Boy.....Race
Historically, in countries such as the U.S. and South Africa, "boy" was not only a 'neutral' term for domestics but also used as a disparaging racist insult towards men of colour (especially of African descent), recalling their subservient status even after the 20th century legal emancipation (from slavery, evolved to race segregation, viz. Apartheid) and alleged infantility, and many still consider it offensive in that context to this day since it denotes that men of colour (especially of African descent) are less than men or no better than an animal. For example a simple command for a dog would be, "Come here boy!"