c'mon guys! they're really not that hard! Here's another,

There was a profesor named Snape,
At whom all the students whould gape,
And his greasy hair,
And that awfull stair,
Is what makes them gape at Snape!

(I know that the last line is the same as the first, which is cheeting in a way, but Edward Lear, who made the limeric as popular as it is, did that all the time!)

Now for yours, please.