Kieran Culkin gives his 'A Real Pain' co-star and director, Jesse Eisenberg, his gum mid-speech while accepting an award from National Board of Review.

A Real Pain sees Jesse Eisenberg and Kieran Culkin play cousins who go to Poland to retrace their family's history. Eisenberg says being both actor and filmmaker made him nervous because he sees actors giving notes as the "biggest taboo".

An emotional Kieran Culkin thanked A Real Pain writer-director and co-star Jesse Eisenberg tonight as he accepted the Golden Globe for Best Male Actor In A Supporting Role for a Motion Picture. "I’m here because Jesse Eisenberg wrote an incredible script.