The state of waking up slow and hazy after smoking large amounts of pot the night before. Similar to a hang over, but much less painful because pot is not a poison, unlike alcohol. Another example of the sheer stupidity of prohibition.
Dude came over last night with some awesome brownies. We also just had to try my brand new double chamber bong while playing Guitar Hero. Don't make me do any math today, I got a huge cabbage head.
1:An insult commonly used to insult the size of a persons head. There are other insults referring to a large head such as: Large skull, vast cranium, oliT, and pumpkinjitis head.
2:Being called a big head could also refer to a person being cocky and arrogant.