English version

bob your head

From Longman Dictionary of Contemporary Englishbob your headbob your headHELLOYESto move your head down quickly as a way of showing respect, greeting someone, or agreeing with them He spoke to the girl, who bobbed her head. bob
Examples from the Corpus
bob your headShe reddened and bobbed her head and sat down a little awkwardly.A man turned into a baby, who bobbed his head and wept.The birds just sort of bob their heads like they're wind up toys.
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