all that the greatest
band,
brokencyde does. To boince is to carry
swagger and wear a dope scarf with a range rover or a luxury sedan in the back. Also you must wear emo clothes, and have skunk style hair with multi colours.
"dude last
night at the bar i was boincing so hard, that the
dj gave me a shout out",
"
yo look at that freaxxxx boincing hard!, all he does is boince"