1) n.: How a typical Caucasian American with a suit and tie would speak. Sounds very proper without any slang and each letter is enunciated with care. In addition to no slang, there also aren't any contractions such as "aren't", "isn't"
2) n.: The voice of a typical Caucasian American teenager. Usually said toward an African American.
Caucasian: "Well hello there Lamar, how is your basketball practice going?"
Lamar: "Man, fuck you and your white-speak!"
Lamar *with a high pitched voice*: "Hey guys, how's it going?"
Tyrone: "Oh shit, this nigga got whitespeak! Run before we catch it!"