First one: pretty funny.
Second one: I guess.
I’m a math nerd, but I didn’t know that disease carrying insects were called vectors. By the time I had googled it, the funny had worn right off.
I loathe math, but I got both and both merited at least a smile.
The notion of specialized terminology in humor always comes up for me when I watch Silence of the Lambs. The psychological evaluation pop quiz thing that Clarice gives to Lecter? Lecter says to her, “Did you really think you could dissect me with such a blunt little tool?”
“Instrument” would have been so much better.
I lived with a math major for two years, so I’ve heard those two jokes about a zillion times. If you know the math, they’re funny. If you don’t, they’re just cryptic.
Esoteric jokes are always funny if you get the reference.
So, no.
First is only funny as the setup to the second; taken together, kind of funny (but not as funny as the “what’s brown and sticky?” joke).
Knock Knock
Oh, G-d.
Ahem.
“Who’s there?”
I eat mop.
Needs a verb. And also needs some funny.
One of my favorite math jokes.
Two math professors are in a bar. One is lamenting how little math is appreciated and how stupid most people are math wise. The other disagrees. They bicker back and forth. Finally the second prof has to go to the bathroom. He swings past a blonde waitress and tells her " heres five dollars, come over to our table in a minute. I am going to ask you a question. Just answer X squared over 2". She agrees.
So, a few minutes later prof two gets back the table. Tells prof one “I wanna make a bet with you. See that blonde over there? I bet even she knows the answer to a simple calculus problem”. “No way! Put me down for twenty” prof one responds.
Blonde waitress comes over. Prof two “mam, what is the integral of y=x?”
Blonde waitress "x squared over 2 "
Prof one is dumbfounded. Prof two happily collects his ill gotten twenty.
Blonde waitress gives the gentlemen their beers and quitely says " and plus of course an arbitrary constant C" as she walks away.
Seriously? No one? I gotta throw myself on this grenade? Fine.
sigh I eat mop who?
ewwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwww
As I’m Sagittarian, I WANT to get the joke, but…I don’t. 
EXPLAIN!!! Or I will bug you forever. You know how stubbornly single-minded we can be. 
that youtube video was very funny.
See, this is a math joke that anyone can ‘get’ and appreciate. /thumbsup
Lol’ed. Best joke in the thread. Ftr I understood the mountain climber mosquito but failed to grok the OP, which obviously isn’t funny.
Everyone’s a critic.
I asked for it…
It doesn’t. I’m actually sadder now, picturing you with an ink-stained shirt pocket.
I used pencils. 