My pulse will be quickenin'
With each drop of strychnine
We feed to a pigeon.
It just takes a smidgen!
To poison a pigeon in the park.
- 'Poisoning Pigeons in the Park' Tom Lehrer

Right, don't get me wrong - I'm not advocating the poisoning of any creature, pigoen or otherwise - this song just makes me laugh. It's the cheesy rhymes... :)