what's the meaning of " hat trick'? tell me baby?

what's the meaning of " hat trick'? tell me baby?
what's the meaning of " hat trick'? tell me baby?

what's the meaning of " hat trick'? tell me baby?
帽子戏法
一场足球比赛 一个人独进两球叫梅开二度,独进三球叫帽子戏法.