The Fight Club sig is moderately amusing. But it falls flat because we get it with the first example. It continues and there is no payoff at the end.
Jesus teleporting into your mouth is funny, because it’s a guy’s meat in your mouth. Saying, “Says the guy who thinks a cracker turns into a long dead carpenter… in a chalice.” It just doesn’t have the punch.
Oh. Homophobic funny.
The chalice from the palace holds thine which is divine?
If it tastes like bread, the guy is dead.
There are a host of other puns to come…
On a meta level it works because Catholics are horrifyingly anti gay. So I’d say it wouldn’t be homophobic. It makes fun of homophobes.
Everyone tells me Jesus was of Mediterranean decent, and was a brown person. But then they tell me He was a cracker. I just don’t know what to think!
Ugh. No. I hate that excuse. You don’t get a freebie by pushing the opinion onto someone else. You’re the one making the joke.
Some of my best friends are meta.
So, you’re of the opinion that I’m homophobic because I said, “in your mouth”?
Whichevers. I can’t make you accept that, but check my posting history, if there is a stronger advocate for SSM on this site, I’m not sure who he or she would be.
I’m of the opinion that’s a terrible excuse.
Also, Bricker is not “anti-gay”.
It’s not an excuse, because I didn’t do anything wrong.
<3
So’s that. 
My prior sig was that Schrodinger’s Pizza was both delivery and DiGorno until the waveform collapses – a play on the commercial for Digorno Pizza claiming the product is indistinguishable from delivery, and the quantum wavestate thought experiment proposed by Schrodinger involving a cat.
So, yes. “Nerd funny.”
More socially awkward than nerd, though I will grant you, there is overlap. 
Why is that funny?
Heh heh… heh heh… he said meat in mouth… heh heh…
Ah, a Beavis & Butthead level of humor.
Got it. Very … appropriate.
Because cannibalism taboo? Because of the ingrained homophobia of many Catholics? Because of the absurdity of having a succulent medallion of your savior in your lickin’ hole?