The curious he be 

he going in and out

wanting to know

what it was all about

that which does not concern him

no way he be involved

yet wants to know all the things

that be his way all through

poking his nose into the issues

that  crosses not him

or that never entangles him

he gets into every detail

asking why and how now and then

posing what every time

wanting to know more and more

that be his curiosity all these days

going with the idiom most popular

curiosity kills the cat always

so as to say it also certainly 

would kill him one day