A lass on safari called Lena
Was seduced by a passing hyena
Twas better she said
Than a tumble in bed
But as sex went it could have been cleaner


The following are philosophical rather than dirty - the last one's relatively clever.

There was a young student called Fred,
Who was questioned on Descartes and said
It's perfectly clear
That I'm not really here,
For I haven't a thought in my head.

Catspaw when sober or pissed,
Can be frequently heard to insist,
Letting out a great fart:
I follow Descartes
I stink, so I therefore exist.

There was a young lady called Bright
Who could travel much faster than light
She went out one day
In a relative way
And came home on the previous night