A euphamism used to describe a woman (or man) who attempts to converse with a mouthful of semen. Their jaw takes on a pelican-like shape as they attempt to not spill any of the precious elixir while speaking. When speaking in this manner, the orator invariably (no matter their race or origin) sounds cajun; hence the name "Louisiana Pelican". Who dat!?!
My woman tried to do the Louisiana Pelican for me last night and sneezed baby batter all over my face!
C'mon mayun, I cain't hardly unnastann yoo! Yoo soun like a Loozyana Pelican!