a whole heckuva lotta bit
It means you're not just a little bit mad. You’re a whole heckuva lotta bit mad. Like you’re ready to throw your phone out the window and also your best friend.
My dog chewed up my shoes. A whole heckuva lotta bit mad.
My mom forgot my birthday. A whole heckuva lotta bit mad.
My teacher gave me a pop quiz. A whole heckuva lotta bit mad.