What are the consequences of putting down a false ethnicity on your application?

[collegemom3717]

One of my black friends got into Harvard with a 3.6 UW and with very little extracurriculars while my Asian friend got waitlisted with a perfect GPA and ACT along with leadership positions.

And you are ascribing the different outcomes solely to their different ethnicities? You don’t know what you don’t know about the reasons for the outcomes, and to make it solely about ethnicity is not only a disservice to all three of you, but it won’t help you learn about the things that will help you make your best application.