smart talk1
noun
1Clever, witty, or persuasive talk, especially of an insincere nature.
2Impertinent or rude remarks or replies; backchat.
Origin
Mid 18th century.
smart-talk2
verb
1To engage (a person) in clever, witty, or persuasive conversation, especially of an insincere nature.
2To talk to or answer (a person) in an impertinent or rude way.
Origin
1930s; earliest use found in Blytheville (Arkansas) Courier News.