SPAM. The canned meat product, not the unsolicited e-mail variety. Never consumed it myself, but it appears that many people feel a strong attachment to their "chopped pork shoulder meat with ham meat added". So strong are their feelings that they have generated a web site of Haiku poetry dedicated to -- you guessed it -- SPAM. Check out: http://stuff.mit.edu/people/jync/spam/archive.html

Here's some of the SPAM Haikus (known as SPAM-kus) that stand out for me:

Empathize with them
Cut your finger on SPAM top
Pigs must feel that too.

and...

Pink porcine passion
Unzip the can, give it here
Wham! Bam! Thank you SPAM!

and more still...

Cold and congealed, ugh
Add some heat, now nicely browned
Much better to eat.