It's quite simple my dear sir. See, all you have to do is read the last comment and say something that's bigger than it.
For example:
Ant sex
Ant orgy
etcetera

Double etcetera.

A Midget wearing Pink Crusader Armor with a might cow steed named bob.

Hugo Chavez Frias.

Hugo Chaves Frias on a motor cycle

Hugo Chaves Frias popping a wheelie on a motorcycle.

Me popping a baloon on a motorcicle You're worst nightmare