"내기" refers to a bet or wager made between two or more parties, often involving a challenge or competition. It is a common practice in various cultures, where individuals agree on specific terms and conditions, usually involving money or a prize. The outcome of the bet is determined by the results of the agreed-upon event. In many cases, 내기 can be seen in sports, games, or even casual challenges among friends. It adds an element of excitement and competition, as participants have a vested interest in the outcome. However, it is important to approach 내기 responsibly to avoid potential disputes or financial issues.