Umbridge was teaching a class. Severus, Flitwick, Sprout, Burbage, Sinistra and Minerva wanted to see what her classes were like so they are all sitting in the back. Flitwick is watching, and drinking tea, Snape's expression is unreadable as usual, Burbage has her usual warm smile, Sprout is watching with interest, Sinistra is observing Umbridge's every move and McGonagall looks like she's awaiting an excuse to get Umbridge in trouble. You also sit in the back, you are sitting right in front of them. Umbridge was looking for someone to answer a question and she looked at you. "You, answer this question."