Possible Clues:

• Suck up
• Defer obsequiously (to)
• Knock out with weight — ouch! Fall on the floor?
• To perform an act of servile respect
• Grovel, offering punch and whiskey to wife
• Try to gain favour by flattery
• Do some groveling
• Fawn King has reaction to a sudden pain linked to pull
• Old Chinese gesture of deference
• Historic demonstration of reverence in eastern Asia