Freudian ears
An error in hearing that is interpreted as occurring due to the interference of some unconscious ('dynamically repressed') wish, conflict, or train of thought of a sexual nature.
Ben: Hey man, did you see my cool trick?
Jeremy: Why would I want to look at your dick?
Ben: What? I said trick, I think you've got some Freudian ears.
Jeremy: Why would I want to look at your dick?
Ben: What? I said trick, I think you've got some Freudian ears.