In earlier times, a corncob was used by some for personal hygiene concluding a visit to the outhouse. To say that one is "rough as a cob" is to note their abrasive manner, or unpolished style of approach usually in regard to communications or actions.
1. The nutritious delicious foodstuff consumed almost primarily by geeks, allowing said geek to gain supreme pwnage powers - not for the n00b hearted. (Also prevents constipation).
2. Serious pwnage delivered swiftly witout mercy to several n00bs at any one time.
When you line up a row of bare-breasted girls - and proceed to lick (and/or nibble) their breasts as you go proceed from left to right (or right to left).
Toppings such as butter, salt - or breast milk - are optional.