Penis button 

A disturbingly unattractive protruding bellybutton, particularly on an otherwise attractive female, so pronounced as to be reminiscent of a small penis. First appeared on paparazzi websites describing bikini pictures of talk show host Kelly Ripa's unnaturally protruding navel.

Bob: Hey look at that sweet honey strollin' up the beach.
Jay: Yeah, she's -WTF? What the hell is that stickin' outa her gut?
Bob: Oh man, she has a penis button! I'm gonna yyargh!!
Jay: Man, way to spoil the picture...Shit!
Sweet Honey: Hi guys!
Bob: (wwrrreettcchh!)

Penis button by Grafikman May 14, 2009

Button penis 

A man's penis under 3 inches in length. (See also: Micropenis)

Guy 1- Did you saw the coach in the showers?

Guy 2- Oh shit yeah, he has a button penis!

Button penis by Nobli June 1, 2015

Belly button penis

When a man has a penis that sticks out no further than his belly button

I asked him if that was his belly button or his penis and he said it was his belly button penis

Belly button penis by Sumfukinguy June 18, 2023

Benjamin Buttons Penis 

When your penis is large and very impressive at a flaccid state but when you gain an erection it shrinks to a very small babby carrot.

I have to give that chick the soft serve because I have a benjamin buttons penis

Benjamin Buttons Penis by TeaBaggins01 May 23, 2016