語源は不明だが、おそらくアイルランド人パトリックのニックネームである一般的な個人名PatまたはPaddyから。fool、idiot、scapegoatに由来する。
"Poor Rogers," Vincent said, still smiling, "he is always the 'Patsy Bolivar' of the school."
"Yes," Frank answered, "if there are any mistakes to be made or trouble to fall into, Rogers seems to be always the victim." ["Anthony Yorke," "A College Boy," 1899]