I know of a mother who completely lamed her son by her witty tongue. Every time he wanted to assert his masculinity and be enterprising, she would make a little mocking remark which killed all his elan and made him look ridiculous.
Von Franz argues that maternal mockery is a primary psychodynamic mechanism by which the negative mother complex arrests the development of masculine agency and heroic initiative in the puer aeternus.
, The Problem of the Puer Aeternus, 1970thesis