It turns out that years and years of intensive astronaut training doesn't mean you don't still look like a drunk dad while trying to hammer a nail.
Based on this video we have to imagine that the instructions for hammering in the astronaut manual (that's right, it's called the astronaut manual) go something like this:
1. Find the tiniest hammer possible.
2. If you drop the hammer, exclaim "oh rats!" as though you were a 1950s grandmother that just realized she bought creamy instead of chunky peanut butter.
3. In order to pick up the hammer, hop around it erratically, as though you've never picked up something before in your life and it's a totally foreign concept to you. Don't just kneel on the ground and grab it -- that would make your pretty white astronaut suit all dirty!