Tug (one's) forelock British disapproving old-fashioned
(Said by the third person) If a person tugs their forelock to another person, it means that they show too much respect to the second one; or they are too concerned about pleasing the second one who is in a superior position.
They are just fawning young men who always find an opportunity to tug their forelock to the boss.
I can't stand those who tug their forelock to rich but arrogant patrons.
The verb “tug” should be conjugated according to its tense.
A "forelock" is used to refer to a lock of hair that falls over a person's forehead. Long ago it was usual for lower-class people to remove their hats in front of upper-class people. In case they were not wearing a cap, they touched their forelock instead. First recorded in writing by Harriet Martineau in 1832