Matt- he's just doing a parlay bet
... Google if you don't understand from here.... BUT:
There's straight bets-- nearly 1/1 payouts,
Parlays (multiple teams... All have to win, but your payout increases)-- EX: 2 teams = ~2.6x bet. The payout multiplier increases as you go up in teams. My 11 team was going to pay me over a grand yesterday. That's why I was so mad that Florida St. fucked that game up.
Teasers. Teasers allow you to change the spread-- must have two or more teams in a teaser.
Ex: Pats vs Colts last week was Pats -9
Giants vs Eagles was Giants +5
I bet Pats -3 and Giants +11 (I ended up losing this, but it's an example)
I did a '6 point teaser,' adding 6 points in my favor on either side. The payouts are obviously changed by doing this, but it's a good way to give yourself an advantage.