push shit in

To have someone stick their fingers in-through-the-out-hole in order to give one sexual pleasure.

anal sex

the act of doing so many push up that you in fact defecate yourself

To persist at a task that one is clearly not capable of.

In Australian idiom, engaged in a hopeless task.

Taking another man up the back passage.

An strategy used to manipulate unfavorable Internet ratings, opinions or other social-media emergencies by displacing them from awareness with massive amounts of alternatively engineered content.