should mr clergs be nervous? 

Nothing spacific. 

The Chicken Song from Spitting Image, when I'm talking to people called Keith.

I get never met a nice south African whenever I talk to a south African 

Well-deserved Heh for Octo.

Octo is witty as f. I’ve noticed that before.

There should be some sort of prize or something. 

no

I've currently got

Underground

Overground

Wombling Free

Stuck in my head for some reason

I've got "Come Undone" stuck in my head. "They're selling razor blades and mirrors in the street..."

I didn't get octo's joke :(

Do I need to be more pacific? 

Recently the theme tune from The Littlest Hobo keeps popping up. I like the lyrics because that's me to a T.

Theres a voice
Keeps on callin' me
Down the road thats were i'll always be
Every stop i make
I'll make a new friend
Can't stay for long just turn aound
And i'm gone again

Maybe tomorrow i'll wanna settle down
Until tomorrow i'll just keep movin' on

That always used to be the classic "kicking out of the club at the end of the night /clear the dance floor" song 

I read somewhere this is due to low level inflammation of the brain. Could be bollox, but keep meaning to try some ibuprofen to see if that stops it, especially when it’s an annoying song.

O God I hope not

A couple of Ibuprofen is better than shoveling down the cocktail of mind altering drugs any doctor will give you if you mention the slightest hint of psychological non conformance to them