The unfortunate male disorder where the penis is one quarter the circumference of a #2 pencil. Usually in the case of this "Micro Penis" the shaft has been covered with pubes just under the mushroom cap of the penis.
Girl - "You got to be fucking kidding me...!"
Guy - "What?" (as he stands there with pants around ankles)
Girl - "Ummm your dick looks like a bearded mesquito."
Guy - "Fuck you, most chicks think it's cute."
Girl - "It may be cute, but it's useless to me as I can get off better using a half eaten wet triscuit cracker on my clit"