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"