My First Limerick :)

So there I was, getting utterly bored while the teacher droned on and on, so I tried my hand at a limerick... well, since writing limericks is not supposed to be very easy, I'd consider my first one acceptable. It's funny alright, if you, you know 'get' it. Enjoy XD

There was once a little boy named Matt,
Who once sat on a gnat,
         Since then his tushie,
         Had a big, big blushie,
And never again could he sit on that.

:)