Related to the word wigger, it refers to a Middle Eastern, Arabian, or a person from one of those countries, who acts too black. The word is made up of terrorist and nigger, hence the word tigger.
(noun; Pronun: TIG-URR) The white-boy version of the racially discriminatory term 'nigger'. 'Tigger' is to be used when the word 'nigger' is just not appropiate. For example, 'nigga' may not be an appropiate word to use if you are whiter than glue and you're trying to sing some DMX while cruising in the 'hood with the windows rolled down in your '06 Focus.
'Tigger' can also be used in the form of 'tigga', which has the same meaning. It is rumoured that this bastardization will give wiggers more street cred. I think it was street cred anyway. That or bullet holes; but I can't be bothered to check...
Example One:
Eeny, Meeny, Miny, Mo!
Catch a tigger by his toe
If he hollers,
Let him go
Eeny, Meeny Miny, Mo!