I smoke by myself before i go to sleep most nights of the week, so that probably outnumbers the rest of the options. I smoke with my brother and his friends on the weekend nights and my friends or dealers the rest of the time (most of my dealers i go to school with, so we're friends)
With friends or just alone for me. With friends is getting to be less and less though because many are quitting for jobs/drug testing.
I smoke quite a bit with my friends but I gotta say I smoke with my twin sister most of the time. She's always comin' 'round with badass grass. I can't resist.