Umbridge: "Miss Granger will you leave my classroom please" Hermione: "Why?"

Umbridge:"Only pure-blood's can be in my class"

Y/N: looks at Umbridge with a cold and rude expression "Leave Then"

Umbridge: looks at you "Excuse Me?"

Y/N: rude "What's the prob?" "Half-blood"

Umbridge gets upset, but Hermione seems happy now and everyone bursts into laughter, cause of your statement, which upsets Umbridge even more