What is this?

A mexican backroll is where the rotation is initiated by tucking your head towards your knees causing a more 'rail over rail' flip than the traditional 'tip over tail' flip initiated by looking over your lead shoulder.

what is easier, the regular backroll, or mexican backroll?

I don't have an answer for you in terms of 'easiness'. I will say that the mexican is the precursor to learning several more complex inverts, while the 'regular' backroll is usually the classical backroll people learn first.

Hey Loren thanks for your advise.... Ill hopefully try it today and let you know how it goes!

i thought it was the other way around....