The White Squall is a Sexual move performed on any of the following: Barskank, Girl you're cheating on your woman with, Girlfriend or Fuck buddy.
It is performed when any of the above are giving you a bj or doing the pull and pray and they somehow pissed you off...or you're feeling like an ass. Either is acceptable.
When you're blowing your load do it in your hand instead of misc orafice/condom then wind one up and crack her across the face with said hand. Try this from behind for extra hilarity.
You're fucking your woman from behind and she makes a wise ass comment...So you bring her down a peg or two with a sneak attack white squall to the face