to produce an expression on your face to show that you do not like sb/sth or in order to make sb laugh :
What are you pulling a face at now?
to produce an expression on your face to show that you do not like sb/sth or in order to make sb laugh :
What are you pulling a face at now?
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005