Stop in for a cup of coffee

Mitch got a sports betting buddy. Think I'll give him a couple hundred $$ and the Chiefs on an over. I understand the points part, but do have to win for me to get a payout. Do they set odds for the over/under??
Yes, on a "tease bet " like that. The Chiefs must win, and the total must be over. If either bet is not covered, you lose. Thats why a lot of times I will just take the over. Matters not who wins.....