What do you mean by 'sleeping on shrooms'?

I fell asleep but I had smoked lots of weed and I don't think I was tripping that hard when I laid down. I remember laying down for a long time just tripping balls.
Frost. Reviewed by Frost. on . 2 Day High from ONE joint (shared) I shared this joint of pot with like 4 people and it fucked me up good. I thought it was great stuff, but the next day, ALL DAY, I was still stoned. I had to go to school on a crazy high (which I prefer not to do). It was fun in retrospect, but probably not very smart -- I should have skipped or something. ANywayyyy, have any of you had that happen? BTW, it was just weed, no shrooms or acid or anything else mixed in. Rating: 5