I noticed my mother secretly crying one time while I was playing a video game on the computer. hah I think I still remember what game I was playing. Anyways, moving on... I ignored it and continued playing my game. I consciously ignored her; it wasn't like I was so mesmerized by the game that her crying didn't faze me, it was because I didn't know what to do. We were in the same room but she was crying secretly (or not so secretly).
The odd thing is that if that happened right now, I wouldn't know what to do still. Our family members don't cry in front of each other. We don't talk about sadness either. I try not to cry in public because I know it puts others in an awkward position.
What did you do? If not, what do children usually do in this situation?