Hopping mad
Definition 1 of 1
Pro Tip 1/3Idiomatic Emphasis
Used to emphasize the intensity of anger, often hyperbolically. 
My dad was hopping mad when he saw the dent in his car.
Pro Tip 2/3Informal Usage
Common in spoken and informal contexts, less so in formal writing. 
I avoid writing 'hopping mad' in academic essays.
Pro Tip 3/3Cultural Understanding
Recognized in many English-speaking regions. Similar to 'jumping mad'. 
My British friend said she was hopping mad about the train delay.