Skin the grizzly

1:) To buckle up and do something: Gearing up (lit. Or fig.) and taking on a challenge or task with determination and readiness.

2:) To do the damn thing: Getting ready and fully committing to taking action, especially in the face of a difficult or demanding situation.

3:) A euphemism for male masturbation.

I don't care what you all say, I'm still going to skin the grizzly.

Skinning the grizzly

To just buckle down and do something. To just buckle down and 'do the damn thing'.

To masturbate.

"Hey, how's it coming along?"
"Well .. I had to start Skinning The Grizzly, but I got it done!"