TOUCH (OR TUG) ONE'S FORELOCK
Meaning of TOUCH (OR TUG) ONE'S FORELOCK in English
touch ( or tug) one's forelock
Brit.
raise a hand to one's forehead in deference to a person of higher social rank.
→ forelock
Concise Oxford English vocab.
Сжатый оксфордский словарь английского языка.
2004