The most terrible force on earth

A.M.: It's the most terrible force on earth!
Z: Gasp! what does it do???
A.M.: It can twist and turn your insides! Burn you from within! Drain your soul out, leave you gasping for air n light... It can bend the most powerful man...
Z: Double Gasp!! :O What is it??!
A.M.: Oh..um.. diarrhoea.

LOLz. :D