Definitions:
present or constitute (a problem or danger)

assume a particular position in order to be photographed, painted, or drawn

pretend to be (someone or something)

behave affectedly in order to impress others

a way of standing or sitting, especially in order to be photographed, painted, or drawn

a particular way of behaving adopted in order to impress or to give a false impression

puzzle or perplex (someone) with a question or problem