Ookla:
First user posts a noun, then the next user has to defeat the noun with another noun and explain how the defeat is accomplished.
Examples:
A: Elephant
B: Mice - defeat the elephant because elephants are afraid of mice.
C: Cheese - defeats the mice because mice like cheese and are lured into a trap by it.
And so on...
Picking up from the last game:
ShootingStar:
Dread Cthulu consumes miniature black holes for dim sum.