This song is titled 'We Will Kill You', based upon 'We Will Rock You' By Queen. It is a song about the Death Eaters waiting to get rid of Snape. (You may have noticed this already, but I really dislike Snape.)
Snapey you’re a boy make a big noisePlayin’ at the park wanna be with Lils one day
You got parents who say
You’re a big disgrace
Wavin’ your wand all over the place
We will we will kill you
We will we will kill you
Snapey you’re a boy make a big noise
Playin’ at the park wanna be with Lils one day
You got parents who say
You’re a big disgrace
Wavin’ your wand all over the place
We’re Singin'
We will we will kill you
We will we will kill you
Snapey you're a young man dull man
Shoutin' in the grounds wanna get the DADA post some day
You got mud on your face
You big disgrace
Wavin' your wand all over the place
We will we will kill you
We’re Singin'
We will we will kill you
Snapey you're an old man poor man
Pleadin' with your eyes ’Let me live another day’
You got blood on your face
You big disgrace
Someday we’re gonna put you into your grave
We will we will kill you
We’re Singin'
We will we will kill you
We’re Singin'
We will we will kill you
Snapey boy we will we will kill you
We will we will kill you