A person who defecates in a toilet and leaves, without flushing, leaving a suprise for the next person to use the bathroom.
Jake left a gigantic piece of shit in the toilet and I called him a turdbird because he didnt have the courtesy to flush after he was done.
by Angela DiPerna June 20, 2007
It's taking Mr. Fanelli a long time in the bathroom. He must be shooting turdbirds in the ceramic firing range!
by pentozali August 28, 2010