Q: What does it mean when a dead person tears whilst putting surma in their eyes during the ghusl?
A: Don’t pay attention to this. Pay attention to how much you cry before Allah Ta`ala.
Regarding the practice of applying surma for the deceased, refer to http://muftionline.co.za/node/15820
And Allah Ta’ala (الله تعالى) knows best.
Mufti Ebrahim Salejee (Isipingo Beach)