Pulling a Garch

Interrupting a conversation to make a point that is either wildly misguided, completely off-topic, or factually incorrect because you think that you read or heard it somewhere.

Teacher: Let's take a look at this graph that looks like Mickey Mouse
Matthew: Is that a Fourier transformation? A Fourier transform can draw any image using just rotating circ--
Teacher: No. It's a graph that looks like Mickey Mouse.
Warren: Matthew always be pulling a Garch like that.