what does "shout cat calls at me" mean? [closed]

A "cat call" is a term for the noises and words that people might call out when an attractive person is walking by. The most common kind has another name, wolf whistle, which has a very specific sound (there is an audio clip on the linked page).

In context, the person is saying that she is going to have a lot of boys calling out to her when she walks by because they think she is attractive and are trying to get her attention.

Catcalling is regarded by most people as very rude, so if someone's behavior is described as catcalling, it's usually meant in a negative or derogatory sense.