What is A Jesus?
1.
a long period of time, enternally or forever
it's going to take us a jesus to get to the mall from here.
See
1.
a guy with long hair
Drill sergeant: "Look, boys, we got a Jesus here! Get his ass in that barber chair!"
See
2.
Something really amazing that someone did.
Boy: "I got 98% on that test about the economic revolution in southern Russia during the time of Stalin's rule, even though it was supposedly really hard and everyone was freaking out about it, especially that one girl with the really ugly hair. Christ, she's crazy."
Boy 2: "Oh shit man! That's a jesus right there!"
See