A term used to hide the fact that you are actually crying due to being moved emotionally by implying that you are crying because someone must be cutting onions.
When Jack saw the video of the lost dog being reunited with its owner he began to tear up and exclaimed, "Who's cutting onions!"
by TheRealDealToo January 14, 2016
by KKnD June 04, 2015
by Thomas Oldham October 20, 2004
by Lord Elven Sacrifice October 20, 2004