Something unusual, or out of the blue. A instance at which you may have witnessed something weird or crazy happen.
Two men walk down the street and see another man walking down the other side with a lamp shade on his head, The first man says to the second "Trigga Man"
by Big Murph April 24, 2006
Also known as trigga but not to be mistaken for the HBG freestyler. Triggaman is an Upt gangsta who keeps street life on the low. They say he has a savage like mind which is highly dangerous. his identity is unknown but they say his sign is the letter "T' overlapping the letter "M".
Watch upt, triggaman might be up there
by todd Stewart November 06, 2006