Poles apart

Sir Ernest Henry Shackleton
Enjoyed a bad pun.
But he went to the ends of the Earth
To give irony a wide berth.

 

credit: Wikipedia

Or perhaps you prefer

Sir Ernest Henry Shackleton,

Like a gag writer, enjoyed the odd pun.
But he went to the ends of the Earth
To give simile a wide berth.

Or even

Sir Ernest Henry Shackleton

Enjoyed a bad pun.

But he went to the ends of the Earth

To give hyperbole the widest possible berth.