According to some authors, cheerleading started around 1877 in the United States, when Princeton University students yelled chants from the stands at games. Nowadays most cheerleaders are women.
短语 a leg up on someone 的意思是与他人相比具有优势。
My grandmother attended a catering course in France last year. Now, when it comes to cooking, she definitely has a leg up on the family.
If you study hard, you'll have a leg up on the competition when it comes to finding a good job.
另一个短语 to pull someone's leg 就是开某人玩笑的意思，比如说些完全捏造或不可能的事情。
What?! You've won a million dollars in the lottery? You are pulling my leg!