brain leakage 

When you have just thought of something completely random and off-topic, and decide to write/draw about that completely random topic.

Man 1: "Hey d00d. Look what I just drew."
Man 1: *shows picture of EPYC Randomness.
Man 2: d00d, that is just pure brain leakage man.
Man 1: I know, right?.

brain leakage by What is this, I DON'T EVEN.... November 26, 2010

Anally induce brain leakwage 

The act of having a communal reverse brain fart.

To have a thought process before having the actual thought.

ususally occurs when high on psychedelic drugs like 2Ci or 2Cb

I think we just had an anally induce brain leakwage

Anally induce brain leakwage by Jubz-E March 12, 2009