From Chapelle Show:
To masturbate while you hands are numb, to give the sensation that someone else is pleasuring you.
Dave Chapelle as Lil' John: Sometimes i like to sit on my hand until it gets numb and then masturbate. I call it the stranger.
baka ka is the japanese word for 'asshole' (not the part, the insult)
when baka is used by itself, it becomes 'idiot'.
someone is being a jerk, call him an asshole. say "baka ka!"
