look up any word, like cleveland steamer:
 
1.
to do an act of kindness for another
hey bro, that was mighty white of you to water my plants while i was away.
by Dark Lord of the Anus May 08, 2005
 
2.
The act of really fuckin someone over. Much in the same way the white man has fucked over everyone else.
Wow, man. That was mighty white of you to run over that guys dog because he had a problem with you fuckin' his retarded sister after you got her drunk as hell.
by jojo August 24, 2004