When you find a pest sitting on your knee
Not a really big bug, still crush it with glee
But I think you'll find that method leads
To something worse
There'll be tears a-streaming down your face
When your book so thick arrives in place
Sure, you've squashed that bug but you've also made
Your knee reverse

I'd say "Fly, you'll go
Won't break my own bones
So I will try to flick you"

Doubt you have your bug spray on hand, no
If you did, would suck, afraid it's so
At that angle you'd find spray stays, it's gross
Sticky foam perched

I'd say "Fly, you blow
Since you've tried to stow
On my leg, I will flick you"

One's knee is no place
For a stupid insect, so go away
Just leave, let me say goodbye
Can't greet with slaps, mate
I promise you, it'll hurt you more, damn pain
Will leave, small breeze made, no lie

I hate flies, you know
Many types of blows
In thy case, I'd just flick you