In other words "pulling a Jesus Christ", is when you do a favor for someone so big that you suffer for it out of love.
Guy1:"dude my toilet is broken, and i don't have a plunger. Do you mind sticking your hand in there and unclogging it? you owe me
Guy 2: Fine, just know that i'm pulling a J.C for you
pulling a J.C
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).