buttroar 

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."

buttroar by Brenden Sheckle January 19, 2007

buttroach 

a term used for a jerk,ignorant person,someone you just can't think of another name for, or can't call another name

shutup you're bein a buttroach

don't be a buttroach man

buttroach by taylorg5196 April 3, 2011

Buttboar 

The equivalent to a butt-whore but this is in reference to girls from Arkansas. S

Man that arkansas razorback girl is a huge buttboar.

Buttboar by Gree Hax April 30, 2009