They're Mexican and older then 14. So yes, they have children.
And you are officially racist. It is not okay to say things like this about Mexicans or Chinese people, despite the odd acceptance of such racism in America today.
News stories mentioning Mexicans do not automatically warrant jokes about refried beans, burritos, picking lettuce, border-jumping or fence climbing, being lazy, having 20 kids, or being illegal immigrants. Nor do stories about Chinese people mean it is okay to automatically say something irrelevant about rice, or talk with an offensive "Chinese" accent. If you see something written about an African-American do you think it is okay bring out the same tired old watermelon, fried chicken, barbecue, sambo, welfare comments? That is wrong, and the crap white people say about Mexicans and Chinese is just as bad, even if you can usually get away with it. (And no, it is not okay to call all people of Asian descent Chinese. Everyone knows you are not really joking, even when you say you are.)
Yeah, I'm white, American, and male, and I'm tired of people who look and talk like me making me look bad in the eyes of everyone else. They know we're not all bad, but the ignorance that goes hand in hand with white racist elitism still makes me sick. If you want to deride someone, don't be lazy -- at least have a reason and make it personal, not based on flawed stereotypes. Otherwise shut the fuck up.
Many people are unenthusiastic about their work.