to talk out of ones ass

to act like you know what you're talking about when you really have no clue

Bob: Did you know that the quantum theorum can also be used in biology?
LeeRoy: Man, you talkin outta yo ass

by Pink1 November 4, 2004

to talk out of ones ass

An act performed by individuals with a rare disorder known as vocal assitis. People with this disease actually have a voice box right behind their prostate in their anus.

Jon Kodatt likes to talk out of his ass.

by william d willerson February 18, 2003