verb: To greb or grebbing/grebbing). To complain about something to everybody else you know.
A greb is someone who complains a lot, also known as a grebber. someone who is an incredible greb can also be given a ranking along with their title of greb, such as captain Greb.
the word 'grebbing' becomes 'grebbin' when it is said with annoyance or anger.
Captain Greb: where's all the booze gone!!??
Person: oh quit your grebbin!