A poser is someone who goes out of their way to dress or act a certain way, e.g. punk, in order to attract members of the opposite sex or new friends who are into that scene.
she bought that in claires accesories but says she bought it in asha! what a poser!
a more exaggerated version of the word smexy, meaning sexy/ smart and sexy
oooh thats soo effin shmecsi!