kick·er 
/ˈkɪkɚ/ noun
plural kick·ers /ˈkɪkɚ/ noun 1 [count] : a person who kicks something ; especially : a person who specializes in kicking the ball in a sport like American football 2 [singular] US, informal : a sudden and surprising occurrence, remark, etc.
▪ The real kicker came when the chairman announced that he was quitting.
▪ The real kicker came when the chairman announced that he was quitting.
