Its another one of the famous Slytherin parties, and Draco is shit-faced drunk. Hes had about 7 shots, so he somehow ended up in the corridor snogging someone. And its intense. Draco puts a thigh between the persons legs, and the person moans into Dracos mouth. After a little more snogging, the person breaks the kiss to breath. Thats when Draco sees who it is.

A random Slytherin boy. He starts panicking. It seems hes completely sober now. How could he snog a boy?