Think of the things you depend on your parents for right now, weigh that against a little ass-chewing and grudge that may last a month or two. Grin and bear it.
Alternatively, think of the things you depend on your parents for right now, evaluate whether or not you could survive with out them. Don't take shit.
However, since you're worried about being grounded for life :lol: I'm guessing you haven't reached the appropriate mindset for either of those options, so just shit your pants for awhile.