I can't say "that person has a small peter". Or "do you rub your peter".
But I can say something has "petered out". And of course that refers to the same peter and what peters do. But adding the suffix "ed" and the word "out" seems to change everything. Quite odd.
But I can say something has "petered out". And of course that refers to the same peter and what peters do. But adding the suffix "ed" and the word "out" seems to change everything. Quite odd.