credit: getty images

Oh man! Don't you hate when people spoil the ending of a show or movie for you!?

Jennifer Lawrence is a big Homeland fan, but she was only two seasons in, when a BIG SPOILER was dropped on her.

WARNING: Obviously the video has a SPOILER.

And even though Lawrence was kinda mad, she was super excited to meet a star from the show. Before Damian Lewis came over, she was telling the reporter to "Be cool, be cool."