Not Johnny

Someone who appears to be, but is in fact, not Johnny.

Dude! That Dude over there is a not Johnny!

Not Johnny by ShrewdSauce November 26, 2021

Johnny-Not-So-Smart 

a good-natured but mentally challenged person

Go help that Johnny-not-so-smart get on his bike.

Johnny-Not-So-Smart by Jackasslaw February 10, 2010

Not no Jonny Green 

To be moddest while compareing yourself to "jonny green" as he is clearly suppiour to you at what ever you are doing

the bad grammer enfercies this point

That was a good end shot, "yeah but im not no jonny green"

Not no Jonny Green by Charlie_miller94 May 26, 2010