Also Can Be Phrased:
stick his/her neck out
As a turtle takes a risk when it sticks its neck out, one is risking their own safety, reputation, or something else when they stick their neck out. This idiom means to do something knowing you may not succeed but you find it important enough to try. Most likely originated from the way chickens were slaughtered by sticking their necks out on the chopping block.
I’m going to stick my neck out for you and present your idea to the boss.
No, I need to be loyal to Rob. He stuck his neck out for me at the last meeting.