Refers to a particularly violent eruption of gas from the anus after a singulary intense bong session. Rumor has that EZ E coinded the phrase while recording "Niggaz4Life" with NWA in 1991, but the term gained popularity in the california metalcore scene in the late 90's with bands like poison the well adamantium and downpour.
"mufafucka' let out a buttroar and spilled the bong."
A man (or woman) who has passed the seven tests of the tumblefumbley palace, these tests include: 1. the test of honesty (in which a rectal snake crawls up into the anus and peers into your soul)2. the test of levity (in which you have to sit through four hours of the Cain and Abel variety show) 3. the test of strength (in which the participant must dip their testicles into hot lead and do forty squats while drinking mead) 4. the test of endurance (in which one must ingest and digest 12oz. of diamonds, and then excrete it as coal/cash) 5. the test of the big dick (you must have a big dick to pass this test) 6. the test of wisdom (in which one must trick the cock demons into ones urethra and then convince them use ones penis to remove the rectal snake, this must be done with precision) 7. the test of the vaginal grail (in which one must venture deep into the heart of the bush garden and retrieve the vaginal grail from the minions of Twatius Coochamus)
"Having triumphantly completed the 7 tests of the TumbleFumbley palace, he arose, a Fuck Warrior."