Being unfamiliar with one's surroundings/activities thus often being vulnerable in such circumstances.
Commonly used to describe a change in surroundings by phrases such as 'going fish out of
water' or 'to go fish out of
water.'
In this sense, the meaning is similar to the term '
Slippin' meaning to leave one's usual abode/habitat to enter next manz endz.
i.e.
Brare 1: Yo blud come we roll down (enter endz of choice here), still.
Brare
2: Rah!!! Allow goin' Fish out of
Water down dere blud, manz gonna get merked ugetme?!
Brare 1: Oh
yes, I suppose you're right old bean. Silly me.