yanking his doodle

Playing with your penis, masturbating.

I walked in on my brother yanking his doodle.

knows his stuff

Meaning that someone is very good at what he does, and knows a lot about it.

You: "The mechanic was able to repair my car withing seconds"

Your friend: "He knows his stuff"

Peeling his wig

A slang term to cut a niggas head off
sum may think that rivals heads shouldn't be attached to there body for sumthing they did wrong

Yo he talkin shit ...lets start peeling his wig

arse in his hand

Used to describe a person who is in a bad mood

Don't expect a smile out of him- he's got his arse in his hand

fuck his day

to ruin or spoil ones day.

he oh so happy, im going to fuck his day!

popped his clogs

To literally die.

Did you hear about the old guy down the street? He finally popped his clogs,they found him yesterday.

whats-his-nuts

a name for a gentleman or bull dike whose name can not be recalled

Isn't Sally getting jack hammered by whats-his-nuts?

That bull dike kinda looks like whats-his-nuts from The A Team.