Q: What did the apple say to the orange? A: Nothing stupid, apples don't talk.
Q: Why did the Orange go out with a Prune? A: Because he couldn't find a Date!
Q: What does an Orange sweat? A: Orange Juice!
Q: Why did the blonde girl stare at the carton of orange juice? A: It said concentrate.
Why did the orange stop Rolling down the hill? Because it ran out of juice!
Do you now why a orange is smart? Because it CONCERTRATES!
Q: Why did the man lose his job at the orange juice factory? A: He couldn't concentrate!?
source:?/miscellaneousjokes/foodjokes/orangejokes.html
其中concertrate有“浓缩”还有“集中注视”的意思，一语双关。