1.   A group of teenage boys stood talking in a group outside.

2.   A lot of teenage boys suddenly get into fitness and weight-training.

3.   A teenage boy knocked him to the ground and ran off with his briefcase.

4.   Across the street, half a dozen teenage boys hunch over a broken bicycle.

5.   As drivers, teenage boys are often overconfident and take stupid risks.

6.   Drug use among teenage boys is on the increase.

7.   Fighting between rival gangs resulted in the death of a teenage boy.

8.   Men and teenage boys went fishing every day, usually in small groups.

9.   Teenage boys especially feel a need to cut the umbilical cord tying them to their mothers.

10.   Teenage boys tend to drive wildly and often have accidents.