Vogon poetry is described as "the third worst poetry in the Universe". The main example used in the story is a short piece composed by Jeltz, which roughly emulates nonsense verse in style (example below). The story relates that listening to it is an experience similar to torture as demonstrated when Arthur Dent and Ford Prefect are forced to listen to the poetry (and say how much they liked it) prior to being thrown out of an airlock.
Ah freddled gruntbuggly, Thy micturations are to me, As plurdled gabbleblotchits, On a lurgid bee, That mordiously hath blurted out, Its earted jurtles, Into a rancid festering confectious organ squealer. drowned out by moaning and screaming Now the jurpling slayjid agrocrustles, Are slurping hagrilly up the axlegrurts, And living glupules frart and slipulate, Like jowling meated liverslime, Groop, I implore thee, my foonting turling dromes, And hooptiously drangle me, With crinkly bindlewurdles, Or else I shall rend thee in the gobberwarts with my blurglecruncheon, See if I don’t.