Pipe (one's) eye American dated
To weep or cry
A little girl is piping her eye in front of the store because her parents do not buy her a new barbie.
She piped her eye a lot when she failed the first prize in the contest.
My mom piped her eye when it was time for me to leave.
The verb "pipe" should be conjugated according to its tense.
There is a source that the phrase appeared in the 19th century.