I have the same problem, I only know jokes that are in swedish, but this one is one of my favs:
There once was a man in the desert, that bought a camel, but he was unhappy with the speed of the camel so he brought it back to the dealer.
"Sir, this camel is so slow" the man said
"no no sir, just back it up into this tent" the dealer replied
The man backed the camel in, and the dealer took 2 bricks and slaped the camels nutsack, making the camel run of faster than ever.
The man looked puzzled, and asked: "Well how am I supposed to catch it now?"
The dealer replied: "Just back into the tent sir"
