A phrase your parents use against you in order to sound right whether you back talked or not

To be rude to your elders or disrespectful when ask to do something

When your parents are arguing with you and you say something that proves your right

A stupidass comeback your parents use when you have a correct answer to a question or a way to desolate a situation.

Defending or explaining yourself to any authority figure

Back-fence talk (noun) is synonymous to gossip, rumour, scuttlebutt, dirty laundry, slander, defamation, hearsay, whispering campaign, malicious talk, and talebearing.

Try me and see what happens. Don't be rude.