Bosses just don't understand

So my new boss has been a bit picky on when he pays. He talks about how paydays normally are and all that jazz. That makes sense, however, when I was working as a temp, I made more per hour so I didn't need the money as soon. How do I tell this guy who goes out for extravagant dinners with his wife that he doesn't pay me enough to be solvent for a week lag time?