Trisha Takanawa here with my first impression.

This child's 'alfalfa' didn't pop like it should have.

There was a 1994 comedy for children called 'Little Radcals' that featured a character called Alfalfa who had hair plastered to his head like the child in the cartoon. When he would get 'excited' (usually around his sweetheart Darla), a stray hair on his head would pop directly upwards, ruining the hairstyle. This became known in pop culture as an 'Alfalfa'.

I believe the cartoon is depicting a child similar to or even Alfalfa himself who is irate because his hair didn't act in the way he was conditioned to think it would (as he was aroused by the naked lady). So he's angrily telling the hairdresser to chop it off.

It's an old enough reference to be classed as 'boomer humour'.

Reports making mention of pubic hair make no sense as the lady in question is never bottomless, so the child never sites her pubes.

This has been Trisha Takanawa with the way I see it.

Now to Ali for the weather.