You get it from the "Environment" you was raised in.
All three i think but take a look at this -<br />
I consider my sense of humour a gift. :) I laugh at what I laugh at.
I don't believe our sense of humor is genetically inherited but it is learned, and I also think your sense of humor is correlated with your intelligence.
right? worth looking into a sociological study :)
I believe the answer is (All of the above)
Your laugh is infectious and a gift. We must be related! Lol.
I know I didn't get it from my dad he didn't have much of a sense of humor and my mom's sense of humor was there at times but at the weirdest things. I think I got mine from being curious about things ... never having pre conceived ideas of what might be funny and what might not be.
I'm still learning.
I don't know where I got but it's evolved over the years like I have