Insert and "n" and your whole story takes on a new meaning

Let's take, for instance, a situation from last week.
I enrolled myself in a mental fabrication class
at the local city college.
I want to learn some mental fabrication techniques
because I have some ideas for projects that need
mental work.
I went to the Mental Depot off the 5 freeway and
picked up some scrap mental to practice with.
I also got some steel to boots to protect myself
in the case of falling molten mental.
There are four other students in my mental class.
They are all a bit older than me.
One guy has done some mental work before, but
he talks way too much and it's kind of annoying.
Overall, everyone is pretty nice and I'm looking
forward to doing some mental work.
Being able to work with mental will really open
up some doors for me with my art making.