to collapse / to fall into ruins / death of king or emperor / demise
崩
=
山
+
朋
:
Beelzebub (b) is wearing a huge pair of slippers (朋) in front of the engine ((e)ng1). Suddenly someone sticks a fork (山) in them, and they explode. Beelzebub is so scared that he immediately collapses and demises (崩).