If you are still a little confused about exactly what parlay and a teaser is this can help you to understand them a bit. A teaser is a form of bet employed in sports gambling most commonly in basketball and soccer. This bet is a multi-team bet, allowing the bettor to select at least two groups around, in some instances. The bettor will get things onto his favor to subtract or add to the groups chosen to enhance the point spread selected, but will find a yield that is lower if they win. If you believe you have a lock on a single group, but are not so confident of the other this can be tremendously valuable. When you gamble a teaser you are gambling on two groups.