Whereas 5 0 refers to the police generally, Johnny 5 0 is slang for a specific cop- as in, the 5 0 are on their way to arrest you, but Johnny 5 0 is the guy who actually puts you in those cuffs.
I was walking down the street minding my own business, when Johnny 5 0 popped up outta nowhere and asked me for my ID. Naturally, I got the fuck outta dodge as fast as I could.
by ACAB69420 September 3, 2019
Because he is homeless and steals from garbage cans trying reassemble his garbage collection to give people he likes!
Look over there its Johnny 5, in the garbage can.
by Tweekachew October 13, 2020