The act of bidding somethingyou're not going to pay for, typically used on eBay and other online auctions. Shitbids are often a ridiculously high price much, much higher than the value of the actual item being sold. A shitbidder usually targets the person selling the item, often with the intention of making the seller lose money due to a personal grudge.
I posted something on eBay and somebody shitbidded it up to $5000. Now I have to pay to relist it again because he didn't pay.
Comical but frequently used insulting military jargon generally used to denote a lower ranking enlisted person whose uniformed appearance and/or job performance is substantially unsatisfactory ('un-sat'). A person who can be counted on to screw-up the most simple of tasks, and generally not entrusted to handle much more than the menial. Also utilized among civilan population albeit with far less frequency and familiarity; does not resonate with same defamitory impact as when used in military circles.
His shirt isn't ever tucked properly, shoes haven't been shined in ages and his haircut is barely within regulations-not only does he look like hell in uniform but he's terrible at his duties too, what a SHIT Bird!
A creature that erupts out of ones ass leaving behind a fiery inferno of pain in the anus of the victim, the flaming shit bird appears to those who have had way to much spicy food.