Okay. Old thread, pointless bump, but here goes.
Dankus Maximus had the first correct post on this thread.

'Popcorn' refers to small, fluffy, airy, often improperly matured buds that come from low on the cannabis plant.
Many growers actually REMOVE low branches and rub off potential bud sites on the lower part of the main stalk so that popcorn buds cannot grow, and all the plant's energy is directed to the prime top colas, which are of higher quality, easier to trim, and mature all at once.
Popcorn buds are of such low value, and so hard to trim, that often they are simply added to the scrap pile to be converted to hash later, along with the leaf trim. Personally, I save mine in a big paper bag and process them into high grade 'washed' cannabutter for making medical-grade caramels later on.

The buds shown are not popcorn buds. That is unidentifiable BRICK. lol.
stinkyattic Reviewed by stinkyattic on . what exactly is popcorn? where i live there are only three kinds of weed, schwag, popcorn and dro, and i still have no idea what popcorn is except that its great. the only thing ive heard is that it was homegrown but from someone who didnt know what they were talking about, does anyone know what it is? Rating: 5