Jack Koff - The title you claim when you're so proud of your 8-inch peni

The title you claim when you're so proud of your 8-inch penis that you forget you're still in the bathroom.

I'm Jack Koff because I walked out of the bathroom like I just won the lottery.

My buddy is Jack Koff because he told the entire class about his penis during lunch.

I called my dad Jack Koff because he texted me a photo of his penis at 3 a. m.