I popped a pimple on the triangle of death my sister told me that i could get a brain infection is that even possible?

As answered in your previous post, the chances are virtually z-e-r-o. But we'll never say never, and then again, you're not 120 years old.

Perhaps it is best to not squeeze or inflame a local pimple, as risk of infection is possible. A secondary brain abscess or cavernous sinus thrombosis could theoretically occur, although quite uncommon indeed. If skin lesions over face are a concern, discuss management with your doctor.