A clever answer
Teacher: Can any pupil tell me what a fishing-net1 is made of?
Little boy: Sure! It is made of many holes2 tied together with a string3.
In the canteen
What is worse than finding a caterpillar in your salad?..
Finding half a caterpillar!
1 Fishing-net - рыболовная сеть
2 Hole - дыра
3 String - шнурок, веревка