Rick Riordan said this quote
“ Then Leo realized something was blocking the middle of his view. Something large and fuzzy, and so close, Leo had to cross his eyes to see it properly. It was a large, ugly face. Holy mother! he yelped. The face backed away and came into focus. Staring down at him was a beard man in grimy blue coveralls. His face was lumpy and covered with welts, as if he'd been stung by a million bees, or dragged across gravel. Possibly both. Humph. the man said. Holy father, boy. I should think ou know the difference by now. ”