fart rhymes, german
In my early school days we had a quite famous rhyme:
"Winnetou der Weise spricht:
Laute Forze stinken nicht,
aber die leisen,
die um das Arschloch kreisen,
vor ihnen hüte dich,
denn sie stinken fürchterlich"

For the non-german-speaking, here is a rough translation:
"Winnetou the wise says:
Loud farts don't stink,
but beware of the silent ones,
that circle around the arsehole,
for they smell terrible."

Winnetou was a native-american character from the popular cowboy and indian stories written by Karl May.
written by an*nym*us*user, approved by Rosy

I heard this when I was eight. OK, so it's not German. Like I care.

There's a ball of wind
It goes to your heart
It travels down your backbone
and turns into a fart.
a fart is very useful
it gives you lots of ease
it warms the bed at night time,
and suffocates the fleas.
written by an*nymo*s us*r, approved by Matt