A typical joke I find funny is:
Two sausages in a frying-pan one turns to the other and says:
"Phew its hot in here" the other says
"aaaaahhhhhh! a talking sausage"
If I have any sense of humor it's really weird and off-kilter. Your joke reminds me a bit of a Simpsons episode. They're at a carnival and the Simpsons aren't around, and we see a hat-wearing horse talking to the carnival owner:
Horse: But I thought I was your main attraction!?
Owner: Uh, you are Humphrey, you are.
then later we Marge and Lisa meeting Bart and Homer:
Lisa: We just saw the most amazing horse!
Marge: He was wearing a hat!
That kind of stuff just cracks me up. Unfortunately I can't generate any humor on my own, since I've never made anyone laugh.
Another one I like is the Simpsons Treehouse of Horror sketch where they spoof King Kong:
Carl: I heard we're goin' to Ape Island
Lenny: Yeah, to capture a giant ape. I wish we were going to Candy Apple Island
other guy: Candy Apple Island? Whatta they got there?
Carl: Apes. But they're not so big