Question #128378. Asked by aussiesalute.
Last updated Dec 14 2012.
Originally posted Dec 12 2012 6:45 PM.
looney_tunes
Answer has 3 votes
Currently Best Answer
looney_tunes Moderator 19 year member
3319 replies
Answer has 3 votes.
Currently voted the best answer.
It is possibly related to the informal usage "to cry one's eyes out", meaning to weep uncontrollably. When your body stops producing tears after a lengthy crying session, you have run out out tears, and may say that you are "all cried out".