Were vs. was (subjunctive mood)

I wish I were at work and not just helplessly horizontal in bed, which makes me think of the subjunctive mood and how people just ignore it. Take Skee-Lo, for example. Here's Skee-Lo's I wish lyrics:

I wish I was a little bit taller
I wish I was a baller
I wish I was a little bit taller y'all

Because he's wishing these things it should be:

I wish I were a little bit taller
I wish I were a baller

Were is the subjunctive mood and it's what you use when you're totally making something up or wishing for something that isn't real.

So, I wish I were vertical. I wish I were outside. It would be nice if you were to bring me dark chocolate hot chocolate. If I were you I'd go for a nice run right now.

Seriously! Go!