A teacher was sent to a village in Africa to teach English to the tribals. When he found that there were hundreds of them, he thought it would be easier if he just taught the chief and then get him to translate it to the crowd.
So he took the chief for a walk around the jungle, showed him ther river and said "RIVER". The chief repeated "RIVER".
Then he pointed at a tree and said "TREE". The chief repeated "TREE".
The teacher was getting very excited that his job wasn't as bad as he thought.
As they were walking back to the camp, they saw a bush and it was moving vigourously. When they took a peek, they found a couple screwing.
Now the chief points at them and gazes at the teacher. The teacher not wanting to sound very crude, said "MAN RIDING BICYCLE".
The chief then suddenly pulls out a knife and kills the guy who was screwing.
Shocked at this the teacher looks at the chief and gestures at him asking why did he do it.
The chief looking real angry, said "Man riding MY bicycle"