Here's the full explaination of the teaser bet.
https://www.investopedia.com/teaser-bet-5217718I understand that some aren't familiar with it since not every sportsbook has teaser bets. If I recall correctly, I made this kind of bet before when Nitrogen Sports was still popular. However, with the popular casinos now, I don't see this option. Maybe it's available on fiat bookies, but it's still worth discussing here.
I wasn't aware of the teaser bets though I was aware of parley bets from the beginning of my gambling. From the provided link I have read about teaser bets but I could not find enough benefits for this. I think a parley bet is better than teaser bets. And at the same time, I could not find it as a unique idea but it is a part of a parley bet.