Green’s Dictionary of Slang

kid n.2

[kid v.]

1. [mid-19C–1900s] (UK Und.) persuasive talk, aimed at effecting a confidence trick, interrogating a prisoner, etc.

2. [mid-19C+] (also kid-on) teasing, mockery, chaff.

3. [1900s–1910s] (Aus.) excessive praise.

4. a teaser.

5. [late 19C+] nonsense, rubbish; usu. as no kid, I am not telling a lie.

6. [1900s] (Aus.) the victim of a hoax or trick.

In phrases

for kid

[1950s] as a joke .

have more kid in them than goat (v.) [pun on sense 2 above + SE kid, a baby goat]

[1930s+] (Aus.) to be an incurable joker or ‘kidder’.

on the kid

[1860s] bantering, teasing.

play kid (v.)

[1900s] to tease, to joke.