We had a thread like this about five years ago, and it was the source of some amusement. The idea is that you write a limerick about the person who posted before you.
To get it going, here was my offering based on Stetenorve:-
A tenor who sings ever highter,
In the town of the crooked spire,
Fell out of a boat,
Into a moat,
And now just gurgles in choir.
Now someone has to do one about me etc etc