I love haiku-it's a form of poetry that can be used for many things...like, informing a female friend that her bikini strap has come loose...

Bra strap coming off
Better fix it really quick
Lots of pervy men.

...you can express dissatisfaction with transport...

Bus has not come yet
I might even get the train
Stupid traffic jams.

...or you can lament Windows crashes.

Stupid blue-screened comp
Lost all of my work just now
I'll go get Linux.

And, just for noders...

GTKYs suck
Damn newbies go mad on here
Let me nuke the nodes.