[Crocodile Sophism]

She should say, "Hold on just a sec." Then she should go, get a hammer, come back, and whack the crocodile on the head repeatedly.

[Lazy-bones Paradox]

Well, this guy doesn't believe that his choices will impact anything. That's his problem.

Dreamcatcher

Yup, it's a dreamcatcher.

I am woven like a spider web,

but it is not flies that I am designed to ensnare.

My prey is wispy and immaterial.

I protect people from themselves

when they are at their most vulnerable.

What am I?