Could exposure to comedy affect your sense of humor?

[Yonadav]

Not unlike the Spanish Inquisition, comedy relies heavily on one thing - the element of surprise. Surprise and fear... Two things: surprise and fear. And ruthless efficiency... Three... I'll come in again.

Most jokes are only funny the first time you hear/see them, afterwards your brain becomes "wise" to them. I don't know what kinds of comedies you have been watching, but considering your young age, I presume they weren't necessarily of the most sophisticated kind. A lot of teen comedies (comedy in general, really) just repeat the same jokes and gags, over and over, because most film-makers and TV producers don't have much talent, or high opinions of their audience's intelligence. And they're not exactly wrong... You're meant to grow out of those movies and shows, though a worryingly large percentage of people seem to have trouble doing that. 

I'd suggest looking for different kinds of comedies. It may take a while until you define your taste in entertainment and it will change over time, because things do become boring. Except music - nothing will ever have the emotional impact of music you'll listen to in your mid- to late- teens. So use those years wisely.

I don't usually watch teen comedies and when I do I'm expecting them not to be that great, because as you sad producers don't have a lot of talent. 
Though I get the feeling that teen comedies were better when I was younger. 
I like to watch cartoons. Children's cartoons are doing pretty great, though many of them don't have comedy as a main point. I don't watch as much adult animation, because most of it is crap or mediocre.
And when I'm looking for a good sitcom, I usually turn to Seinfeld. I'm thinking about trying Louie, but don't have time right now.

I saw a few episodes of Seinfeild.  But as a non-New York Jew I feel constantly irritated by New York Jews. So the show was not something that I could watch on a regular basis without feeling a general sense of irritation. I had to take it in small doses, just as I do with all New Yorkers-- but especially the Jews.