Throw (something) in (one's) face verb phrase
The noun "teeth" can be substituted for the noun "face".
If you "throw something in one's face", you say bad about one's past during an argument.
His wife often throws his failure in his face every time they argue.
Stop throwing those bad marks in my face.
If you "throw something in one's face", you behave badly or unkindly to someone who has helped you.
You have just thrown her friendliness in her face, haven't you?
He tried to apologize but she threw it in his face right away.
The verb "throw" should be conjugated according to its tense.
The expression originates from c.1600.
One needs to understand the basic techniques or primary details of something before taking actions that require greater skills
Peter failed because he did not learn to walk before he ran.