Okay, enough with the haiku.
For the most clever and amusing poetic form, one really need look no further than the double dactyl. Here's one by George Starbuck. Said
J. Alfred Prufrock to
Hugh Selwyn Mauberly,
"What ever happened to
Senlin, ought-nine?"
"One with the passion for
Orientalia?"
"Rather." "Lost track of him."
"Pity." "Design."