What is Pischer?
1.
the stated definition is far too limited and therefore somewhat mis-leading.
"pischer" refers to the penis of a young boy and can be used as an insult or as a term of endearment, depending on context. The youngest (pre-pubescent)son in a family might be referred to as the "pischer," as may a boy who tries to seem older than his years (i.e., to wish for an adult's penis).
Whereas one might use
Don't worry about what he says. He can't negotiate this deal; he's just a pischer. It's his boss we have to talk to.
See
2.
a yiddish for -small penis- also an insult
(see also, schmuk)
Shut the fuck up you little pischer
See