i never go to sleep, I always have things to do. have sex/masturbate, talk, think, smoke some more, play video games, listen to music, chill with friends (unless I'm at home), watch tv, eat, smoke a bit more, eat some more, listen to music while eating, puffing on a j and covered in sheets, doing stupid shit like walking around with a fez on my head, staring and visualizations while rapidly opening and shutting my eyes to get a strobe like effect (fucking trips me out when I'm really, really ripped), laughing at funny stuff, talking to myself (that's if I'm alone), dancing, singing, writing, drawing, painting (I fingerpainted once, that was good fun until I got paint all over my favourite smoking jumper), do shit that would suck when you're sober like cleaning (better when tweaking yeah true but I smoke more than I tweak) or dishes or something, all while listening to music and eating.
go to bed eventually, of course

I almost always wait til I'm sober, unless I've been smoking consistently all night, and when I'm at home I normally just have a j or two, or a few cones, so I just stay up for a few hours
you're either bored or smoking some indica...weed with a strong body high always makes me feel sleepy, then you get bomb shit that's all in your head and you wake up and start thinking. just mix it up a bit!