walack

white man or boy who thinks they are black;
can not live over ten seconds with out saying something that would get them shot in harlem

When one of your friends gets a fresh haircut he/she needs to go through the ritual of a Walack. To walack or to walack someone is the action of slapping someone on the neck after a they have got a fresh haircut.

The condition for performing a Walack is that every person who has seen the person with the new haircut, within the span of one week of the haircut, may slap the person one time on the neck. The person getting slapped may not move or protect their neck during the duration of the slap.