An attempt by insecure people, mostly young girls, but sadly, some older women also, to appear "sassy" and to project an "I don't care" or "you know I'm sexy" look as if looking like a retarded duck were attractive. Unfortunately, this just shows that a person is insecure and in need of others approval for their happiness.

From STEM, an abbreviation short for "Science, Technology, Engineering and Mathematics", a STEMlord is a pejorative term for a particular kind of person who has studied in these areas at university or works in these fields who holds a pretentious, condescending attitude to anyone who has studied in any other fields, particularly the Arts and Humanities. They typically believe themselves to be more "intelligent" and "rational", while generally remaining incredibly ignorant outside of their areas of expertise and having the charisma of a rotting pig's backside.

Moronic attempt by teenagers with no sense of self to imitate the moronic selfies of moronic pseudo-celebrities like the Kardashian clones.

A sad and tragic epidemic hitting young girls all across myspace and facebook

usually found on girls who think they are flirty

A look that is only acceptable if you happen to be a duck.

Making one's lips appear to be similar to a puckered anus.

Stupid facial expression put forth by stupid women that don't know how to smile. The Duckface is made by moving both lips has far up and outward as possible. Commonly seen in photos of slutty women where the lighting is too high up or they're taking photos of them self in the mirror.