I never said that you wouldnt be done if you only won 1 out of 4, but yes, you would be down $40.
But do keep this in mind guys, the MAXIMUM that you would be down is $400 on that example.
Obviously we hope to win at least 1/2 of our 2 team parlays, if we do that in a $100 betting scenario with 4 bets, then we would win $320.
Generally, we should assume that a 2 teamer pays 2.6 to 1