Horror means an exaggerated fearful expression of surprised. You know, horror film or I looked in horror at the car crash.
Bite myself bored! I have not heard this one either but it seems to me a term of you are so bored you self abuse as a means of entertainment. Animals bite themselves or birds pluck their feathers out when in captivity.
catarrh is the correct term for phlegm or sputum and as for the nose, nasal mucus. Cows milk makes me phlegmy means that it creates catarrh in the lungs.