A crazy, veiny, thick, long, throbbing, out of control erection. The Godzilla of all boners. Saying "Code Whopping Johnny" can also be a discreet way of teleing someone you have a boner, so others don't hear.
Guy1: Hey dude, come with me to go sharpen my pencil
Guy2: No way i'm standing up right now, I have the biggest Whopping Johnny.
When you see a guy who looks like a major douche out in public. The "head" of all douches.
*Major douche walks by*
Guy1: Hey, check out douche bag central over there
Guy2: LOL@ dbag