A poem by Billy Collins always seems to have a twist, some humor or a pun waiting to make you chuckle or stop and wonder while holding your chin.

But now, I’m not surprised by his slights of poetic hand. He has tipped his hat one too many times.
Too many winks.
One can only enjoy a twist so many times.

What would really surprise me is not a poem about jazz that is really a poem about death, or some stanza about a Bird in the winter snow (but really about a distant mother or an Ornette Coleman song or a high school sweetheart)...

What would really stop me in my tracks is

A few simple words
A haiku or prose, a
Moment for its own sake.