It never occurred to me after how many decades on earth? Are you implying that the brand name "Fruit of the Loom" is an allusion to "the fruit of thy womb" in the Rosary?
It's either 1) obvious; 2) too Catholic for the American market, considering the company was founded in 1851; 3) not necessarily Catholic, since the phrase is found elsewhere in the Bible and elsewhere; but in any case 4) seems slightly blasphemous?
Or 5) None of the above.
Yes. That’s where they get it from.
It’s mildly blasphemous, but clever.