When a girl's vagina starts erupting blood, causing her to go into a state introvertness and hostility. Usually, one can differ a period from an uber period by the duration of the pissiness. A girl plagued with the uber period will go through at least a month of being pissed off before returning to normal, ususally with some lame excuse to justify her unprovoked agitation.
The period of time from the point of submission of an Urban Dictionary definition until the point when the submission is either approved for publication or the definition is rejected and not published. The Urban Dictionary Definition Gestation Period can take from minutes to hours or it can take up to several weeks end. There is no explaination for the time variance nor is there a way to determine what the actual definition gestation period will be.
The gestation period for the birth of a human being is far more predictable and accurate than the Urban Dictionary Definition Gestation Period.
Carlos spends his free time creating Urban Dictionary entries because he has a creative mind and enjoys sharing his world. While he is an Urban Dictionary submission pro, he has yet to figure out why the Urban Dictionary Definition Gestation Period is so unpredictable and takes up to several weeks on end for editorial review.